Bug 1521695 - Remove Fluent migration recipes for Firefox 65 r=Pike
authorFrancesco Lodolo (:flod) <flod@lodolo.net>
Tue, 22 Jan 2019 10:52:15 +0000
changeset 514813 6557c7c9440b7d500a2b95608b3ab78f7556cbe5
parent 514812 df49bc87bba17cd600ab87ccf631137648312670
child 514826 3b3ceab396f650fb840b9e16e4e7018a0b628938
push id1953
push userffxbld-merge
push dateMon, 11 Mar 2019 12:10:20 +0000
treeherdermozilla-release@9c35dcbaa899 [default view] [failures only]
perfherder[talos] [build metrics] [platform microbench] (compared to previous push)
reviewersPike
bugs1521695
milestone66.0a1
first release with
nightly linux32
nightly linux64
nightly mac
nightly win32
nightly win64
last release without
nightly linux32
nightly linux64
nightly mac
nightly win32
nightly win64
Bug 1521695 - Remove Fluent migration recipes for Firefox 65 r=Pike Differential Revision: https://phabricator.services.mozilla.com/D17211
python/l10n/fluent_migrations/bug_1491672_aboutDialog.py
python/l10n/fluent_migrations/bug_1491676_preferences_properties.py
python/l10n/fluent_migrations/bug_1491677_extensions.py
python/l10n/fluent_migrations/bug_1491679_extensions.py
python/l10n/fluent_migrations/bug_1497694_updateHistory_preferences.py
python/l10n/fluent_migrations/bug_1498444_sanitize_dialog.py
python/l10n/fluent_migrations/bug_1498448_certificateManager.py
python/l10n/fluent_migrations/bug_1498451_deviceManager.py
python/l10n/fluent_migrations/bug_1501900_aboutdevtools.py
python/l10n/fluent_migrations/bug_1502396_changemp_removemp.py
python/l10n/fluent_migrations/bug_1504457_aboutdevtools.py
python/l10n/fluent_migrations/bug_1504751_aboutnetworking.py
python/l10n/fluent_migrations/bug_1505846_aboutsearchreset.py
python/l10n/fluent_migrations/bug_1507301_aboutSessionRestore.py
python/l10n/fluent_migrations/bug_1508131_aboutServiceWorkers.py
python/l10n/fluent_migrations/bug_1511454_aboutPlugins.py
deleted file mode 100644
--- a/python/l10n/fluent_migrations/bug_1491672_aboutDialog.py
+++ /dev/null
@@ -1,314 +0,0 @@
-# coding=utf8
-
-# Any copyright is dedicated to the Public Domain.
-# http://creativecommons.org/publicdomain/zero/1.0/
-
-from __future__ import absolute_import
-import fluent.syntax.ast as FTL
-from fluent.migrate import REPLACE
-from fluent.migrate import COPY
-from fluent.migrate import CONCAT
-from fluent.migrate.helpers import transforms_from
-from fluent.migrate.helpers import TERM_REFERENCE
-from fluent.migrate.helpers import MESSAGE_REFERENCE
-
-
-def migrate(ctx):
-    """Bug 1491672 - Migrate About Dialog to use Fluent for localization, part {index}."""
-
-    ctx.add_transforms(
-        "browser/browser/aboutDialog.ftl",
-        "browser/browser/aboutDialog.ftl",
-        transforms_from(
-"""
-releaseNotes-link = { COPY("browser/chrome/browser/aboutDialog.dtd", "releaseNotes.link") }
-
-update-checkForUpdatesButton =
-    .label = { COPY("browser/chrome/browser/aboutDialog.dtd", "update.checkForUpdatesButton.label") }
-    .accesskey = { COPY("browser/chrome/browser/aboutDialog.dtd", "update.checkForUpdatesButton.accesskey") }
-
-update-checkingForUpdates = { COPY("browser/chrome/browser/aboutDialog.dtd", "update.checkingForUpdates")}
-update-applying = { COPY("browser/chrome/browser/aboutDialog.dtd", "update.applying")}
-
-update-adminDisabled = { COPY("browser/chrome/browser/aboutDialog.dtd", "update.adminDisabled") }
-
-update-restarting = { COPY("browser/chrome/browser/aboutDialog.dtd", "update.restarting") }
-
-bottomLinks-license = { COPY("browser/chrome/browser/aboutDialog.dtd", "bottomLinks.license") }
-bottomLinks-rights = { COPY("browser/chrome/browser/aboutDialog.dtd", "bottomLinks.rights") }
-bottomLinks-privacy = { COPY("browser/chrome/browser/aboutDialog.dtd", "bottomLinks.privacy") }
-
-aboutDialog-architecture-sixtyFourBit = { COPY("browser/chrome/browser/browser.properties", "aboutDialog.architecture.sixtyFourBit") }
-aboutDialog-architecture-thirtyTwoBit = { COPY("browser/chrome/browser/browser.properties", "aboutDialog.architecture.thirtyTwoBit") }
-""")
-)
-
-
-    ctx.add_transforms(
-        "browser/browser/aboutDialog.ftl",
-        "browser/browser/aboutDialog.ftl",
-        [
-            FTL.Message(
-                id=FTL.Identifier("aboutDialog-title"),
-                attributes=[
-                    FTL.Attribute(
-                        id=FTL.Identifier("title"),
-                        value=REPLACE(
-                                "browser/chrome/browser/aboutDialog.dtd",
-                                "aboutDialog.title",
-                                {
-                                    "&brandFullName;": TERM_REFERENCE("-brand-full-name")
-                                }
-                            )
-                        )
-                    ]
-                ),
-
-            FTL.Message(
-                id=FTL.Identifier("update-updateButton"),
-                attributes=[
-                    FTL.Attribute(
-                        id=FTL.Identifier("label"),
-                        value=REPLACE(
-                                "browser/chrome/browser/aboutDialog.dtd",
-                                "update.updateButton.label3",
-                                {
-                                    "&brandShorterName;": TERM_REFERENCE("-brand-shorter-name")
-                                }
-                            )
-                        ),
-                    FTL.Attribute(
-                        id=FTL.Identifier("accesskey"),
-                        value=COPY(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "update.updateButton.accesskey"
-                            )
-                        )
-                    ]
-                ),
-
-                FTL.Message(
-                    id=FTL.Identifier("update-downloading"),
-                    value=CONCAT(
-                        FTL.TextElement('<img data-l10n-name="icon"/>'),
-                        COPY(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "update.downloading.start"
-                        ),
-                        FTL.TextElement('<label data-l10n-name="download-status"/>')
-                    )
-                ),
-
-                FTL.Message(
-                    id=FTL.Identifier("update-failed"),
-                    value=CONCAT(
-                        COPY(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "update.failed.start"
-                        ),
-                        FTL.TextElement('<label data-l10n-name="failed-link">'),
-                        COPY(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "update.failed.linkText"
-                        ),
-                        FTL.TextElement('</label>')
-                    )
-                ),
-
-                FTL.Message(
-                    id=FTL.Identifier("update-failed-main"),
-                    value=CONCAT(
-                        COPY(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "update.failed.start"
-                        ),
-                        FTL.TextElement('<a data-l10n-name="failed-link-main">'),
-                        COPY(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "update.failed.linkText"
-                        ),
-                        FTL.TextElement('</a>')
-                    )
-                ),
-
-                FTL.Message(
-                    id=FTL.Identifier("update-noUpdatesFound"),
-                    value=REPLACE(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "update.noUpdatesFound",
-                            {
-                                "&brandShortName;": TERM_REFERENCE("-brand-short-name")
-                            }
-                    )
-                ),
-
-                FTL.Message(
-                    id=FTL.Identifier("update-otherInstanceHandlingUpdates"),
-                    value=REPLACE(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "update.otherInstanceHandlingUpdates",
-                            {
-                                "&brandShortName;": TERM_REFERENCE("-brand-short-name")
-                            }
-                    )
-                ),
-
-                FTL.Message(
-                    id=FTL.Identifier("update-manual"),
-                    value=CONCAT(
-                        COPY(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "update.manual.start"
-                        ),
-                        FTL.TextElement('<label data-l10n-name="manual-link"/>')
-                    )
-                ),
-
-                FTL.Message(
-                    id=FTL.Identifier("update-unsupported"),
-                    value=CONCAT(
-                        COPY(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "update.unsupported.start"
-                        ),
-                        FTL.TextElement('<label data-l10n-name="unsupported-link">'),
-                        COPY(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "update.unsupported.linkText"
-                        ),
-                        FTL.TextElement('</label>')
-                    )
-                ),
-
-                FTL.Message(
-                    id=FTL.Identifier("channel-description"),
-                    value=CONCAT(
-                        COPY(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "channel.description.start"
-                        ),
-                        FTL.TextElement('<label data-l10n-name="current-channel"></label>'),
-                        COPY(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "channel.description.end"
-                        )
-                    )
-                ),
-
-                FTL.Message(
-                    id=FTL.Identifier("warningDesc-version"),
-                    value=REPLACE(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "warningDesc.version",
-                            {
-                                "&brandShortName;": TERM_REFERENCE("-brand-short-name")
-                            }
-                    )
-                ),
-
-                FTL.Message(
-                    id=FTL.Identifier("community-exp"),
-                    value=CONCAT(
-                        FTL.TextElement('<label data-l10n-name="community-exp-mozillaLink">'),
-                        REPLACE(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "community.exp.mozillaLink",
-                            {
-                                "&vendorShortName;": TERM_REFERENCE("-vendor-short-name")
-                            }
-                        ),
-                        FTL.TextElement('</label>'),
-                        COPY(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "community.exp.middle"
-                        ),
-                        FTL.TextElement('<label data-l10n-name="community-exp-creditsLink">'),
-                        COPY(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "community.exp.creditsLink"
-                        ),
-                        FTL.TextElement('</label>'),
-                        COPY(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "community.exp.end"
-                        )
-                    )
-                ),
-
-                FTL.Message(
-                    id=FTL.Identifier("community-2"),
-                    value=CONCAT(
-                        REPLACE(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "community.start2",
-                            {
-                                "&brandShortName;": TERM_REFERENCE("-brand-short-name")
-                            }
-                        ),
-                        FTL.TextElement('<label data-l10n-name="community-mozillaLink">'),
-                        REPLACE(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "community.mozillaLink",
-                            {
-                                "&vendorShortName;": TERM_REFERENCE("-vendor-short-name")
-                            }
-                        ),
-                        FTL.TextElement('</label>'),
-                        COPY(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "community.middle2"
-                        ),
-                        FTL.TextElement('<label data-l10n-name="community-creditsLink">'),
-                        COPY(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "community.creditsLink"
-                        ),
-                        FTL.TextElement('</label>'),
-                        COPY(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "community.end3"
-                        )
-                    )
-                ),
-
-
-                FTL.Message(
-                    id=FTL.Identifier("helpus"),
-                    value=CONCAT(
-                        COPY(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "helpus.start"
-                        ),
-                        FTL.TextElement('<label data-l10n-name="helpus-donateLink">'),
-                        COPY(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "helpus.donateLink"
-                        ),
-                        FTL.TextElement('</label>'),
-                        COPY(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "helpus.middle"
-                        ),
-                        FTL.TextElement('<label data-l10n-name="helpus-getInvolvedLink">'),
-                        COPY(
-                            "browser/chrome/browser/aboutDialog.dtd",
-                            "helpus.getInvolvedLink"
-                        ),
-                        FTL.TextElement('</label>')
-                    )
-                ),
-            ]
-        )
-    ctx.add_transforms(
-        "browser/branding/official/brand.ftl",
-        "browser/branding/official/brand.ftl",
-        transforms_from(
-"""
--brand-short-name = { COPY("browser/branding/official/brand.dtd", "brandShortName") }
--vendor-short-name = { COPY("browser/branding/official/brand.dtd", "vendorShortName") }
--brand-full-name = { COPY("browser/branding/official/brand.dtd", "brandFullName") }
--brand-shorter-name = { COPY("browser/branding/official/brand.dtd", "brandShorterName") }
-trademarkInfo = { COPY("browser/branding/official/brand.dtd", "trademarkInfo.part1") }
-
-""")
-)
deleted file mode 100644
--- a/python/l10n/fluent_migrations/bug_1491676_preferences_properties.py
+++ /dev/null
@@ -1,195 +0,0 @@
-# coding=utf8
-
-# Any copyright is dedicated to the Public Domain.
-# http://creativecommons.org/publicdomain/zero/1.0/
-
-from __future__ import absolute_import
-import fluent.syntax.ast as FTL
-from fluent.migrate.helpers import transforms_from
-from fluent.migrate.helpers import VARIABLE_REFERENCE, TERM_REFERENCE
-from fluent.migrate import REPLACE, COPY
-
-
-def migrate(ctx):
-    """Bug 1491676 - Move strings from preferences.properties to Fluent"""
-
-    ctx.add_transforms(
-        "toolkit/toolkit/preferences/preferences.ftl",
-        "toolkit/toolkit/preferences/preferences.ftl",
-        transforms_from(
-            """
-password-not-set =
-        .value = { COPY(from_path, "password_not_set") }
-failed-pw-change = { COPY(from_path, "failed_pw_change") }
-incorrect-pw = { COPY(from_path, "incorrect_pw") }
-pw-empty-warning = { COPY(from_path, "pw_empty_warning") }
-pw-change-ok = { COPY(from_path, "pw_change_ok") }
-pw-erased-ok = { COPY(from_path, "pw_erased_ok") } { pw-empty-warning }
-pw-not-wanted = { COPY(from_path, "pw_not_wanted") } { pw-empty-warning }
-pw-change2empty-in-fips-mode = { COPY(from_path, "pw_change2empty_in_fips_mode") }
-pw-change-success-title = { COPY(from_path, "pw_change_success_title") }
-pw-change-failed-title = { COPY(from_path, "pw_change_failed_title") }
-pw-remove-button =
-    .label = { COPY(from_path, "pw_remove_button") }
-""", from_path="toolkit/chrome/mozapps/preferences/preferences.properties"))
-
-    ctx.add_transforms(
-        "browser/browser/preferences/preferences.ftl",
-        "browser/browser/preferences/preferences.ftl",
-        transforms_from(
-            """
-space-alert-learn-more-button =
-        .label = { COPY(from_path, "spaceAlert.learnMoreButton.label")}
-        .accesskey = { COPY(from_path, "spaceAlert.learnMoreButton.accesskey")}
-space-alert-under-5gb-ok-button =
-        .label = { COPY(from_path, "spaceAlert.under5GB.okButton.label")}
-        .accesskey = { COPY(from_path, "spaceAlert.under5GB.okButton.accesskey")}
-desktop-folder-name = { COPY(from_path, "desktopFolderName")}
-downloads-folder-name = { COPY(from_path, "downloadsFolderName")}
-choose-download-folder-title = { COPY(from_path, "chooseDownloadFolderTitle")}
-""", from_path="browser/chrome/browser/preferences/preferences.properties"))
-
-    ctx.add_transforms(
-        "browser/browser/preferences/preferences.ftl",
-        "browser/browser/preferences/preferences.ftl",
-        [
-            FTL.Message(
-                id=FTL.Identifier("space-alert-under-5gb-message"),
-                value=REPLACE(
-                    "browser/chrome/browser/preferences/preferences.properties",
-                    "spaceAlert.under5GB.message",
-                    {
-                        "%S": TERM_REFERENCE(
-                            "-brand-short-name"
-                        ),
-                    }
-                )
-            ),
-            FTL.Message(
-                id=FTL.Identifier("space-alert-over-5gb-pref-button"),
-                attributes=[
-                    FTL.Attribute(
-                        id=FTL.Identifier("label"),
-                        value=FTL.Pattern(
-                            elements=[
-                                FTL.Placeable(
-                                    expression=FTL.SelectExpression(
-                                        selector=FTL.CallExpression(
-                                            callee=FTL.Function("PLATFORM")
-                                        ),
-                                        variants=[
-                                            FTL.Variant(
-                                                key=FTL.Identifier("windows"),
-                                                default=False,
-                                                value=COPY(
-                                                    "browser/chrome/browser/preferences/preferences.properties",
-                                                    "spaceAlert.over5GB.prefButtonWin.label"
-                                                )
-                                            ),
-                                            FTL.Variant(
-                                                key=FTL.Identifier("other"),
-                                                default=True,
-                                                value=COPY(
-                                                    "browser/chrome/browser/preferences/preferences.properties",
-                                                    "spaceAlert.over5GB.prefButton.label"
-                                                )
-                                            ),
-                                        ]
-                                    )
-                                )
-                            ]
-                        )
-                    ),
-                    FTL.Attribute(
-                        id=FTL.Identifier("accesskey"),
-                        value=FTL.Pattern(
-                            elements=[
-                                FTL.Placeable(
-                                    expression=FTL.SelectExpression(
-                                        selector=FTL.CallExpression(
-                                            callee=FTL.Function("PLATFORM")
-                                        ),
-                                        variants=[
-                                            FTL.Variant(
-                                                key=FTL.Identifier("windows"),
-                                                default=False,
-                                                value=COPY(
-                                                    "browser/chrome/browser/preferences/preferences.properties",
-                                                    "spaceAlert.over5GB.prefButtonWin.accesskey"
-                                                )
-                                            ),
-                                            FTL.Variant(
-                                                key=FTL.Identifier("other"),
-                                                default=True,
-                                                value=COPY(
-                                                    "browser/chrome/browser/preferences/preferences.properties",
-                                                    "spaceAlert.over5GB.prefButton.accesskey"
-                                                )
-                                            ),
-                                        ]
-                                    )
-                                )
-                            ]
-                        )
-                    ),
-                ]
-            ),
-            FTL.Message(
-                id=FTL.Identifier("space-alert-over-5gb-message"),
-                value=FTL.Pattern(
-                    elements=[
-                        FTL.Placeable(
-                            expression=FTL.SelectExpression(
-                                selector=FTL.CallExpression(
-                                    callee=FTL.Function("PLATFORM")
-                                ),
-                                variants=[
-                                    FTL.Variant(
-                                        key=FTL.Identifier("windows"),
-                                        default=False,
-                                        value=REPLACE(
-                                            "browser/chrome/browser/preferences/preferences.properties",
-                                            "spaceAlert.over5GB.messageWin1",
-                                            {
-                                                "%S": TERM_REFERENCE(
-                                                    "-brand-short-name"
-                                                ),
-                                            }
-                                        )
-                                    ),
-                                    FTL.Variant(
-                                        key=FTL.Identifier("other"),
-                                        default=True,
-                                        value=REPLACE(
-                                            "browser/chrome/browser/preferences/preferences.properties",
-                                            "spaceAlert.over5GB.message1",
-                                            {
-                                                "%S": TERM_REFERENCE(
-                                                    "-brand-short-name"
-                                                ),
-                                            }
-                                        )
-                                    ),
-                                ]
-                            )
-                        )
-                    ]
-                )
-            ),
-        ],
-    )
-
-    ctx.add_transforms(
-        "browser/browser/preferences/permissions.ftl",
-        "browser/browser/preferences/permissions.ftl",
-        transforms_from(
-            """
-permissions-capabilities-listitem-allow =
-    .value = { COPY(from_path, "can")}
-permissions-capabilities-listitem-allow-first-party =
-    .value = { COPY(from_path, "canAccessFirstParty")}
-permissions-capabilities-listitem-allow-session =
-    .value = { COPY(from_path, "canSession")}
-permissions-capabilities-listitem-block =
-    .value = { COPY(from_path, "cannot")}
-""", from_path="browser/chrome/browser/preferences/preferences.properties"))
deleted file mode 100644
--- a/python/l10n/fluent_migrations/bug_1491677_extensions.py
+++ /dev/null
@@ -1,439 +0,0 @@
-from __future__ import absolute_import
-import fluent.syntax.ast as FTL
-from fluent.migrate.helpers import transforms_from
-from fluent.migrate.helpers import TERM_REFERENCE
-from fluent.migrate.helpers import MESSAGE_REFERENCE
-from fluent.migrate import REPLACE
-from fluent.migrate import COPY
-from fluent.migrate import CONCAT
-
-def migrate(ctx):
-    """Bug 1491677 -  Migrate subsection of strings of extensions.dtd, part {index}"""
-
-    ctx.add_transforms(
-        "toolkit/toolkit/about/aboutAddons.ftl",
-        "toolkit/toolkit/about/aboutAddons.ftl",
-        transforms_from(
-"""
-addons-window =
-    .title = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "addons.windowTitle")}
-search-header =
-    .placeholder = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "search.placeholder3")}
-    .searchbuttonlabel = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "search.buttonlabel")}
-search-header-shortcut =
-    .key = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "search.commandkey")}
-loading-label =
-    .value = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "loading.label")}
-list-empty-installed =
-    .value = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "listEmpty.installed.label")}
-list-empty-available-updates =
-    .value ={ COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "listEmpty.availableUpdates.label")}
-list-empty-recent-updates =
-    .value = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "listEmpty.recentUpdates.label")}
-list-empty-find-updates =
-    .label = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "listEmpty.findUpdates.label")}
-list-empty-button =
-    .label = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "listEmpty.button.label")}
-install-addon-from-file =
-    .label = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "installAddonFromFile.label")}
-    .accesskey = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "installAddonFromFile.accesskey")}
-help-button = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "helpButton.label")}
-tools-menu =
-    .tooltiptext = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "toolsMenu.tooltip")}
-show-unsigned-extensions-button =
-    .label = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "showUnsignedExtensions.button.label")}
-show-all-extensions-button =
-    .label = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "showAllExtensions.button.label")}
-debug-addons =
-    .label = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "debugAddons.label")}
-    .accesskey = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "debugAddons.accesskey")}
-cmd-show-details =
-    .label = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "cmd.showDetails.label")}
-    .accesskey = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "cmd.showDetails.accesskey")}
-cmd-find-updates =
-    .label = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "cmd.findUpdates.label")}
-    .accesskey = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "cmd.findUpdates.accesskey")}
-cmd-enable-theme =
-    .label = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "cmd.enableTheme.label")}
-    .accesskey = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "cmd.enableTheme.accesskey")}
-cmd-disable-theme =
-    .label = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "cmd.disableTheme.label")}
-    .accesskey = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "cmd.disableTheme.accesskey")}
-cmd-install-addon =
-    .label = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "cmd.installAddon.label")}
-    .accesskey = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "cmd.installAddon.accesskey")}
-cmd-contribute =
-    .label = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "cmd.contribute.label")}
-    .accesskey = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "cmd.contribute.accesskey")}
-    .tooltiptext = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "cmd.contribute.tooltip")}
-discover-title = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "discover.title")}
-discover-footer = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "discover.footer", trim:"True")}
-detail-version =
-    .label = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "detail.version.label")}
-detail-last-updated =
-    .label = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "detail.lastupdated.label")}
-detail-contributions-description = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "detail.contributions.description")}
-detail-update-type =
-    .value = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "detail.updateType")}
-detail-update-default =
-    .label = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "detail.updateDefault.label")}
-    .tooltiptext = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "detail.updateDefault.tooltip")}
-detail-update-automatic =
-    .label = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "detail.updateAutomatic.label")}
-    .tooltiptext = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "detail.updateAutomatic.tooltip")}
-detail-update-manual =
-    .label = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "detail.updateManual.label")}
-    .tooltiptext = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "detail.updateManual.tooltip")}
-detail-home =
-    .label ={ COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "detail.home")}
-detail-repository =
-    .label = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "detail.repository")}
-detail-check-for-updates =
-    .label = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "detail.checkForUpdates.label")}
-    .accesskey = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "detail.checkForUpdates.accesskey")}
-    .tooltiptext = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "detail.checkForUpdates.tooltip")}
-detail-rating =
-    .value = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "rating2.label")}
-addon-restart-now =
-    .label = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "addon.restartNow.label")}
-disabled-unsigned-heading =
-    .value = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "disabledUnsigned.heading")}
-disabled-unsigned-learn-more = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "disabledUnsigned.learnMore")}
-legacy-warning-show-legacy = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "legacyWarning.showLegacy")}
-legacy-extensions =
-    .value = { COPY("toolkit/chrome/mozapps/extensions/extensions.dtd", "legacyExtensions.title")}
-""")
-    )
-
-    ctx.add_transforms(
-        "toolkit/toolkit/about/aboutAddons.ftl",
-        "toolkit/toolkit/about/aboutAddons.ftl",
-        [
-            FTL.Message(
-                id=FTL.Identifier("preferences"),
-                value=FTL.Pattern(
-                    elements=[
-                        FTL.Placeable(
-                            expression=FTL.SelectExpression(
-                                selector=FTL.CallExpression(
-                                    callee=FTL.Function("PLATFORM"),
-                                ),
-                                variants=[
-                                    FTL.Variant(
-                                        key=FTL.Identifier("windows"),
-                                        default=False,
-                                        value=REPLACE(
-                                            "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                                            "preferencesWin.label",
-                                            {
-                                                "&brandShortName;" : TERM_REFERENCE("-brand-short-name")
-                                            }
-                                        )
-                                    ),
-                                    FTL.Variant(
-                                        key=FTL.Identifier("other"),
-                                        default=True,
-                                        value=REPLACE(
-                                            "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                                            "preferencesUnix.label",
-                                            {
-                                                "&brandShortName;" : TERM_REFERENCE("-brand-short-name")
-                                            }
-                                        )
-                                    )
-                                ]
-                            )
-                        )
-                    ]
-                )
-            ),
-            FTL.Message(
-                id=FTL.Identifier("cmd-preferences"),
-                attributes=[
-                    FTL.Attribute(
-                        id=FTL.Identifier("label"),
-                        value=FTL.Pattern(
-                            elements=[
-                                FTL.Placeable(
-                                    expression=FTL.SelectExpression(
-                                        selector=FTL.CallExpression(
-                                            callee=FTL.Function("PLATFORM"),
-                                        ),
-                                        variants=[
-                                            FTL.Variant(
-                                                key=FTL.Identifier("windows"),
-                                                default=False,
-                                                value=COPY(
-                                                    "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                                                    "cmd.preferencesWin.label"
-                                                )
-                                            ),
-                                            FTL.Variant(
-                                                key=FTL.Identifier("other"),
-                                                default=True,
-                                                value=COPY(
-                                                    "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                                                    "cmd.preferencesUnix.label"
-                                                )
-                                            )
-                                        ]
-                                    )
-                                )
-                            ]
-                        )
-                    ),
-                    FTL.Attribute(
-                        id=FTL.Identifier("accesskey"),
-                        value=FTL.Pattern(
-                            elements=[
-                                FTL.Placeable(
-                                    expression=FTL.SelectExpression(
-                                        selector=FTL.CallExpression(
-                                            callee=FTL.Function("PLATFORM"),
-                                        ),
-                                        variants=[
-                                            FTL.Variant(
-                                                key=FTL.Identifier("windows"),
-                                                default=False,
-                                                value=COPY(
-                                                    "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                                                    "cmd.preferencesWin.accesskey"
-                                                )
-                                            ),
-                                            FTL.Variant(
-                                                key=FTL.Identifier("other"),
-                                                default=True,
-                                                value=COPY(
-                                                    "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                                                    "cmd.preferencesUnix.accesskey"
-                                                )
-                                            )
-                                        ]
-                                    )
-                                )
-                            ]
-                        )
-                    )
-                ]
-            ),
-            FTL.Message(
-                id=FTL.Identifier("discover-description"),
-                value=REPLACE(
-                    "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                    "discover.description2",
-                    {
-                        "&brandShortName;": TERM_REFERENCE("-brand-short-name")
-                    },
-                    trim=True
-                )
-            ),
-            FTL.Message(
-                id=FTL.Identifier("detail-home-value"),
-                attributes=[
-                    FTL.Attribute(
-                        id=FTL.Identifier("value"),
-                        value=FTL.Pattern(
-                            elements=[
-                                FTL.Placeable(
-                                    expression=MESSAGE_REFERENCE("detail-home.label")
-                                )
-                            ]
-                        )
-                    )
-                ]
-            ),
-            FTL.Message(
-                id=FTL.Identifier("detail-repository-value"),
-                attributes=[
-                    FTL.Attribute(
-                        id=FTL.Identifier("value"),
-                        value=FTL.Pattern(
-                            elements=[
-                                FTL.Placeable(
-                                    expression=MESSAGE_REFERENCE("detail-repository.label")
-                                )
-                            ]
-                        )
-                    )
-                ]
-            ),
-            FTL.Message(
-                id=FTL.Identifier("detail-show-preferences"),
-                attributes=[
-                    FTL.Attribute(
-                        id=FTL.Identifier("label"),
-                        value=FTL.Pattern(
-                            elements=[
-                                FTL.Placeable(
-                                    expression=FTL.SelectExpression(
-                                        selector=FTL.CallExpression(
-                                            callee=FTL.Function("PLATFORM"),
-                                        ),
-                                        variants=[
-                                            FTL.Variant(
-                                                key=FTL.Identifier("windows"),
-                                                default=False,
-                                                value=COPY(
-                                                    "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                                                    "detail.showPreferencesWin.label"
-                                                )
-                                            ),
-                                            FTL.Variant(
-                                                key=FTL.Identifier("other"),
-                                                default=True,
-                                                value=COPY(
-                                                    "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                                                    "detail.showPreferencesUnix.label"
-                                                )
-                                            )
-                                        ]
-                                    )
-                                )
-                            ]
-                        )
-                    ),
-                    FTL.Attribute(
-                        id=FTL.Identifier("accesskey"),
-                        value=FTL.Pattern(
-                            elements=[
-                                FTL.Placeable(
-                                    expression=FTL.SelectExpression(
-                                        selector=FTL.CallExpression(
-                                            callee=FTL.Function("PLATFORM"),
-                                        ),
-                                        variants=[
-                                            FTL.Variant(
-                                                key=FTL.Identifier("windows"),
-                                                default=False,
-                                                value=COPY(
-                                                    "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                                                    "detail.showPreferencesWin.accesskey"
-                                                )
-                                            ),
-                                            FTL.Variant(
-                                                key=FTL.Identifier("other"),
-                                                default=True,
-                                                value=COPY(
-                                                    "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                                                    "detail.showPreferencesUnix.accesskey"
-                                                )
-                                            )
-                                        ]
-                                    )
-                                )
-                            ]
-                        )
-                    ),
-                    FTL.Attribute(
-                        id=FTL.Identifier("tooltiptext"),
-                        value=FTL.Pattern(
-                            elements=[
-                                FTL.Placeable(
-                                    expression=FTL.SelectExpression(
-                                        selector=FTL.CallExpression(
-                                            callee=FTL.Function("PLATFORM"),
-                                        ),
-                                        variants=[
-                                            FTL.Variant(
-                                                key=FTL.Identifier("windows"),
-                                                default=False,
-                                                value=COPY(
-                                                    "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                                                    "detail.showPreferencesWin.tooltip"
-                                                )
-                                            ),
-                                            FTL.Variant(
-                                                key=FTL.Identifier("other"),
-                                                default=True,
-                                                value=COPY(
-                                                    "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                                                    "detail.showPreferencesUnix.tooltip"
-                                                )
-                                            )
-                                        ]
-                                    )
-                                )
-                            ]
-                        )
-                    )
-                ]
-            ),
-            FTL.Message(
-                id=FTL.Identifier("disabled-unsigned-description"),
-                value=CONCAT(
-                    REPLACE(
-                        "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                        "disabledUnsigned.description.start",
-                        {
-                            "&brandShortName;": TERM_REFERENCE("-brand-short-name")
-                        }
-                    ),
-                    FTL.TextElement('<label data-l10n-name="find-addons">'),
-                    COPY(
-                        "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                        "disabledUnsigned.description.findAddonsLink"
-                    ),
-                    FTL.TextElement("</label>"),
-                    COPY(
-                        "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                        "disabledUnsigned.description.end"
-                    )
-                )
-            ),
-            FTL.Message(
-                id=FTL.Identifier("disabled-unsigned-devinfo"),
-                value=CONCAT(
-                    COPY(
-                        "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                        "disabledUnsigned.devInfo.start"
-                    ),
-                    FTL.TextElement('<label data-l10n-name="learn-more">'),
-                    COPY(
-                        "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                        "disabledUnsigned.devInfo.linkToManual"
-                    ),
-                    FTL.TextElement("</label>"),
-                    COPY(
-                        "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                        "disabledUnsigned.devInfo.end"
-                    )
-                )
-            ),
-            FTL.Message(
-                id=FTL.Identifier("plugin-deprecation-description"),
-                value=CONCAT(
-                    REPLACE(
-                        "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                        "pluginDeprecation.description",
-                        {
-                            "&brandShortName;": TERM_REFERENCE("-brand-short-name")
-                        }
-                    ),
-                    FTL.TextElement(' <label data-l10n-name="learn-more">'),
-                    COPY(
-                        "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                        "pluginDeprecation.learnMore"
-                    ),
-                    FTL.TextElement("</label>")
-                )
-            ),
-            FTL.Message(
-                id=FTL.Identifier("legacy-extensions-description"),
-                value=CONCAT(
-                    REPLACE(
-                        "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                        "legacyExtensions.description",
-                        {
-                            "&brandShortName;": TERM_REFERENCE("-brand-short-name")
-                        }
-                    ),
-                    FTL.TextElement(' <label data-l10n-name="legacy-learn-more">'),
-                    COPY(
-                        "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                        "legacyExtensions.learnMore"
-                    ),
-                    FTL.TextElement("</label>")
-                )
-            )
-        ]
-    )
deleted file mode 100644
--- a/python/l10n/fluent_migrations/bug_1491679_extensions.py
+++ /dev/null
@@ -1,179 +0,0 @@
-# coding=utf8
-
-# Any copyright is dedicated to the Public Domain.
-# http://creativecommons.org/publicdomain/zero/1.0/
-
-from __future__ import absolute_import
-import fluent.syntax.ast as FTL
-from fluent.migrate.helpers import transforms_from, MESSAGE_REFERENCE
-from fluent.migrate import COPY
-
-def migrate(ctx):
-    """Bug 1491679 - Convert a subset of the strings in extensions.dtd to using Fluent for localization, part {index}."""
-
-    ctx.add_transforms(
-    "toolkit/toolkit/about/aboutAddons.ftl",
-    "toolkit/toolkit/about/aboutAddons.ftl",
-    transforms_from(
-"""
-extensions-warning-safe-mode-label =
-    .value = { COPY(from_path, "warning.safemode.label") }
-extensions-warning-check-compatibility-label =
-    .value = { COPY(from_path, "warning.checkcompatibility.label") }
-extensions-warning-check-compatibility-enable =
-    .label = { COPY(from_path, "warning.checkcompatibility.enable.label") }
-    .tooltiptext = { COPY(from_path, "warning.checkcompatibility.enable.tooltip") }
-extensions-warning-update-security-label =
-    .value = { COPY(from_path, "warning.updatesecurity.label") }
-extensions-warning-update-security-enable =
-    .label = { COPY(from_path, "warning.updatesecurity.enable.label") }
-    .tooltiptext = { COPY(from_path, "warning.updatesecurity.enable.tooltip") }
-extensions-updates-check-for-updates =
-    .label = { COPY(from_path, "updates.checkForUpdates.label") }
-    .accesskey = { COPY(from_path, "updates.checkForUpdates.accesskey") }
-extensions-updates-view-updates =
-    .label = { COPY(from_path, "updates.viewUpdates.label") }
-    .accesskey = { COPY(from_path, "updates.viewUpdates.accesskey") }
-extensions-updates-update-addons-automatically =
-    .label = { COPY(from_path, "updates.updateAddonsAutomatically.label") }
-    .accesskey = { COPY(from_path, "updates.updateAddonsAutomatically.accesskey") }
-extensions-updates-reset-updates-to-automatic =
-    .label = { COPY(from_path, "updates.resetUpdatesToAutomatic.label") }
-    .accesskey = { COPY(from_path, "updates.resetUpdatesToAutomatic.accesskey") }
-extensions-updates-reset-updates-to-manual =
-    .label = { COPY(from_path, "updates.resetUpdatesToManual.label") }
-    .accesskey = { COPY(from_path, "updates.resetUpdatesToManual.accesskey") }
-extensions-updates-updating =
-    .value = { COPY(from_path, "updates.updating.label") }
-extensions-updates-installed =
-    .value = { COPY(from_path, "updates.installed.label") }
-extensions-updates-downloaded =
-    .value = { COPY(from_path, "updates.downloaded.label") }
-extensions-updates-restart =
-    .label = { COPY(from_path, "updates.restart.label") }
-extensions-updates-none-found =
-    .value = { COPY(from_path, "updates.noneFound.label") }
-extensions-updates-manual-updates-found =
-    .label = { COPY(from_path, "updates.manualUpdatesFound.label") }
-extensions-updates-update-selected =
-    .label = { COPY(from_path, "updates.updateSelected.label") }
-    .tooltiptext = { COPY(from_path, "updates.updateSelected.tooltip") }
-""", from_path="toolkit/chrome/mozapps/extensions/extensions.dtd"))
-
-    ctx.add_transforms(
-        "toolkit/toolkit/about/aboutAddons.ftl",
-        "toolkit/toolkit/about/aboutAddons.ftl",
-        [
-            FTL.Message(
-                id=FTL.Identifier("extensions-view-discover"),
-                attributes=[
-                    FTL.Attribute(
-                        id=FTL.Identifier("name"),
-                        value=COPY(
-                            "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                            "view.discover.label"
-                        )
-                    ),
-                    FTL.Attribute(
-                        id=FTL.Identifier("tooltiptext"),
-                        value=FTL.Pattern(
-                            elements=[
-                                FTL.Placeable(
-                                    expression=MESSAGE_REFERENCE("extensions-view-discover.name")
-                                )
-                            ]
-                        )
-                    )
-                ]
-            ),
-            FTL.Message(
-                id=FTL.Identifier("extensions-view-recent-updates"),
-                attributes=[
-                    FTL.Attribute(
-                        id=FTL.Identifier("name"),
-                        value=COPY(
-                            "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                            "view.recentUpdates.label"
-                        )
-                    ),
-                    FTL.Attribute(
-                        id=FTL.Identifier("tooltiptext"),
-                        value=FTL.Pattern(
-                            elements=[
-                                FTL.Placeable(
-                                    expression=MESSAGE_REFERENCE("extensions-view-recent-updates.name")
-                                )
-                            ]
-                        )
-                    )
-                ]
-            ),
-            FTL.Message(
-                id=FTL.Identifier("extensions-view-available-updates"),
-                attributes=[
-                    FTL.Attribute(
-                        id=FTL.Identifier("name"),
-                        value=COPY(
-                            "toolkit/chrome/mozapps/extensions/extensions.dtd",
-                            "view.availableUpdates.label"
-                        )
-                    ),
-                    FTL.Attribute(
-                        id=FTL.Identifier("tooltiptext"),
-                        value=FTL.Pattern(
-                            elements=[
-                                FTL.Placeable(
-                                    expression=MESSAGE_REFERENCE("extensions-view-available-updates.name")
-                                )
-                            ]
-                        )
-                    )
-                ]
-            ),
-            FTL.Message(
-                id=FTL.Identifier("extensions-warning-safe-mode-container"),
-                attributes=[
-                    FTL.Attribute(
-                        id=FTL.Identifier("tooltiptext"),
-                        value=FTL.Pattern(
-                            elements=[
-                                FTL.Placeable(
-                                    expression=MESSAGE_REFERENCE("extensions-warning-safe-mode-label.value")
-                                )
-                            ]
-                        )
-                    )
-                ]
-            ),
-            FTL.Message(
-                id=FTL.Identifier("extensions-warning-check-compatibility-container"),
-                attributes=[
-                    FTL.Attribute(
-                        id=FTL.Identifier("tooltiptext"),
-                        value=FTL.Pattern(
-                            elements=[
-                                FTL.Placeable(
-                                    expression=MESSAGE_REFERENCE("extensions-warning-check-compatibility-label.value")
-                                )
-                            ]
-                        )
-                    )
-                ]
-            ),
-            FTL.Message(
-                id=FTL.Identifier("extensions-warning-update-security-container"),
-                attributes=[
-                    FTL.Attribute(
-                        id=FTL.Identifier("tooltiptext"),
-                        value=FTL.Pattern(
-                            elements=[
-                                FTL.Placeable(
-                                    expression=MESSAGE_REFERENCE("extensions-warning-update-security-label.value")
-                                )
-                            ]
-                        )
-                    )
-                ]
-            ),
-        ]
-    )
deleted file mode 100644
--- a/python/l10n/fluent_migrations/bug_1497694_updateHistory_preferences.py
+++ /dev/null
@@ -1,58 +0,0 @@
-# coding=utf8
-
-# Any copyright is dedicated to the Public Domain.
-# http://creativecommons.org/publicdomain/zero/1.0/
-
-from __future__ import absolute_import
-import fluent.syntax.ast as FTL
-from fluent.migrate.helpers import transforms_from
-from fluent.migrate import COPY
-from fluent.migrate import REPLACE
-from fluent.migrate import REPLACE_IN_TEXT
-from fluent.migrate.helpers import VARIABLE_REFERENCE
-
-def migrate(ctx):
-    """Bug 1497694 - Migrate Update History in Update section of Preferences to use Fluent for localization, part {index}."""
-
-    ctx.add_transforms(
-        "toolkit/toolkit/updates/history.ftl",
-        "toolkit/toolkit/updates/history.ftl",
-        transforms_from(
-"""
-history-title = { COPY("toolkit/chrome/mozapps/update/history.dtd", "history.title") }
-history-intro = { COPY("toolkit/chrome/mozapps/update/history.dtd", "history2.intro") }
-close-button-label =
-    .buttonlabelcancel = { COPY("toolkit/chrome/mozapps/update/history.dtd", "closebutton.label") }
-    .title = { COPY("toolkit/chrome/mozapps/update/history.dtd", "history.title") }
-no-updates-label = { COPY("toolkit/chrome/mozapps/update/history.dtd", "noupdates.label") }
-name-header = { COPY("toolkit/chrome/mozapps/update/history.dtd", "name.header") }
-date-header = { COPY("toolkit/chrome/mozapps/update/history.dtd", "date.header") }
-type-header = { COPY("toolkit/chrome/mozapps/update/history.dtd", "type.header") }
-state-header = { COPY("toolkit/chrome/mozapps/update/history.dtd", "state.header") }
-""")
-)
-
-    ctx.add_transforms(
-    "toolkit/toolkit/updates/history.ftl",
-    "toolkit/toolkit/updates/history.ftl",
-    [
-        FTL.Message(
-            id=FTL.Identifier("update-full-name"),
-            attributes=[
-                FTL.Attribute(
-                    id=FTL.Identifier("name"),
-                    value=REPLACE(
-                        "toolkit/chrome/mozapps/update/updates.properties",
-                        "updateFullName",
-                        {
-                            "%1$S": VARIABLE_REFERENCE("name"),
-                            "%2$S": VARIABLE_REFERENCE("buildID"),
-                        },
-                        normalize_printf=True
-                    )
-                )
-            ]
-        )
-    ]
-)
-
deleted file mode 100644
--- a/python/l10n/fluent_migrations/bug_1498444_sanitize_dialog.py
+++ /dev/null
@@ -1,193 +0,0 @@
-# coding=utf8
-
-# Any copyright is dedicated to the Public Domain.
-# http://creativecommons.org/publicdomain/zero/1.0/
-
-from __future__ import absolute_import
-import fluent.syntax.ast as FTL
-from fluent.migrate.helpers import transforms_from
-from fluent.migrate import COPY
-from fluent.migrate import REPLACE
-from fluent.migrate import CONCAT
-from fluent.migrate.helpers import TERM_REFERENCE
-
-def migrate(ctx):
-    """Bug 1498444 - Migrate Sanitize Dialogs to use Fluent for localization, part {index}."""
-
-    ctx.add_transforms(
-        "browser/browser/sanitize.ftl",
-        "browser/browser/sanitize.ftl",
-        transforms_from(
-"""
-clear-time-duration-prefix =
-    .value = { COPY("browser/chrome/browser/sanitize.dtd", "clearTimeDuration.label") }
-    .accesskey = { COPY("browser/chrome/browser/sanitize.dtd", "clearTimeDuration.accesskey") }
-
-clear-time-duration-value-last-hour =
-    .label = { COPY("browser/chrome/browser/sanitize.dtd", "clearTimeDuration.lastHour") }
-
-clear-time-duration-value-last-2-hours =
-    .label = { COPY("browser/chrome/browser/sanitize.dtd", "clearTimeDuration.last2Hours") }
-
-clear-time-duration-value-last-4-hours =
-    .label = { COPY("browser/chrome/browser/sanitize.dtd", "clearTimeDuration.last4Hours") }
-
-clear-time-duration-value-today =
-    .label = { COPY("browser/chrome/browser/sanitize.dtd", "clearTimeDuration.today") }
-
-clear-time-duration-value-everything =
-    .label = { COPY("browser/chrome/browser/sanitize.dtd", "clearTimeDuration.everything") }
-
-clear-time-duration-suffix =
-    .value = { COPY("browser/chrome/browser/sanitize.dtd", "clearTimeDuration.suffix") }
-
-history-section-label = { COPY("browser/chrome/browser/sanitize.dtd", "historySection.label") }
-
-item-history-and-downloads =
-    .label = { COPY("browser/chrome/browser/sanitize.dtd", "itemHistoryAndDownloads.label") }
-    .accesskey = { COPY("browser/chrome/browser/sanitize.dtd", "itemHistoryAndDownloads.accesskey") }
-
-item-cookies =
-    .label = { COPY("browser/chrome/browser/sanitize.dtd", "itemCookies.label") }
-    .accesskey = { COPY("browser/chrome/browser/sanitize.dtd", "itemCookies.accesskey") }
-
-item-active-logins =
-    .label = { COPY("browser/chrome/browser/sanitize.dtd", "itemActiveLogins.label") }
-    .accesskey = { COPY("browser/chrome/browser/sanitize.dtd", "itemActiveLogins.accesskey") }
-
-item-cache =
-    .label = { COPY("browser/chrome/browser/sanitize.dtd", "itemCache.label") }
-    .accesskey = { COPY("browser/chrome/browser/sanitize.dtd", "itemCache.accesskey") }
-
-item-form-search-history =
-    .label = { COPY("browser/chrome/browser/sanitize.dtd", "itemFormSearchHistory.label") }
-    .accesskey = { COPY("browser/chrome/browser/sanitize.dtd", "itemFormSearchHistory.accesskey") }
-
-data-section-label = { COPY("browser/chrome/browser/sanitize.dtd", "dataSection.label") }
-
-item-site-preferences =
-    .label = { COPY("browser/chrome/browser/sanitize.dtd", "itemSitePreferences.label") }
-    .accesskey = { COPY("browser/chrome/browser/sanitize.dtd", "itemSitePreferences.accesskey") }
-
-item-offline-apps =
-    .label = { COPY("browser/chrome/browser/sanitize.dtd", "itemOfflineApps.label") }
-    .accesskey = { COPY("browser/chrome/browser/sanitize.dtd", "itemOfflineApps.accesskey") }
-
-sanitize-everything-undo-warning = { COPY("browser/chrome/browser/sanitize.dtd", "sanitizeEverythingUndoWarning") }
-
-window-close =
-    .key = { COPY("toolkit/chrome/global/preferences.dtd", "windowClose.key") }
-
-sanitize-button-ok =
-    .label = { COPY("browser/chrome/browser/browser.properties", "sanitizeButtonOK") }
-
-sanitize-button-clearing =
-    .label = { COPY("browser/chrome/browser/browser.properties", "sanitizeButtonClearing") }
-
-sanitize-everything-warning = { COPY("browser/chrome/browser/browser.properties", "sanitizeEverythingWarning2") }
-sanitize-selected-warning = { COPY("browser/chrome/browser/browser.properties", "sanitizeSelectedWarning") }
-""")
-)
-
-    ctx.add_transforms(
-    "browser/browser/sanitize.ftl",
-    "browser/browser/sanitize.ftl",
-    [
-        FTL.Message(
-            id=FTL.Identifier("clear-data-settings-label"),
-            value=REPLACE(
-                "browser/chrome/browser/sanitize.dtd",
-                "clearDataSettings4.label",
-                {
-                    "&brandShortName;": TERM_REFERENCE("-brand-short-name")
-                },
-            )
-        ),
-
-        FTL.Message(
-            id=FTL.Identifier("sanitize-prefs"),
-            attributes=[
-                FTL.Attribute(
-                    id=FTL.Identifier("title"),
-                    value=COPY(
-                            "browser/chrome/browser/sanitize.dtd",
-                            "sanitizePrefs2.title",
-                        )
-                    ),
-                FTL.Attribute(
-                    id=FTL.Identifier("style"),
-                    value=CONCAT(
-                        FTL.TextElement("width: "),
-                        COPY(
-                            "browser/chrome/browser/sanitize.dtd",
-                            "sanitizePrefs2.modal.width",
-                        )
-                    )
-                )
-            ]
-        ),
-
-        FTL.Message(
-            id=FTL.Identifier("sanitize-prefs-style"),
-            attributes=[
-                FTL.Attribute(
-                    id=FTL.Identifier("style"),
-                    value=CONCAT(
-                        FTL.TextElement("width: "),
-                        COPY(
-                            "browser/chrome/browser/sanitize.dtd",
-                            "sanitizePrefs2.column.width",
-                        )
-                    )
-                )
-            ]
-        ),
-
-        FTL.Message(
-            id=FTL.Identifier("dialog-title"),
-            attributes=[
-                FTL.Attribute(
-                    id=FTL.Identifier("title"),
-                    value=COPY(
-                            "browser/chrome/browser/sanitize.dtd",
-                            "sanitizeDialog2.title",
-                        )
-                    ),
-                FTL.Attribute(
-                    id=FTL.Identifier("style"),
-                    value=CONCAT(
-                        FTL.TextElement("width: "),
-                        COPY(
-                            "browser/chrome/browser/sanitize.dtd",
-                            "sanitizeDialog2.width",
-                            )
-                        )
-                    )
-                ]
-            ),
-
-            FTL.Message(
-                id=FTL.Identifier("dialog-title-everything"),
-                attributes=[
-                    FTL.Attribute(
-                        id=FTL.Identifier("title"),
-                        value=COPY(
-                                "browser/chrome/browser/browser.properties",
-                                "sanitizeDialog2.everything.title",
-                            )
-                        ),
-                    FTL.Attribute(
-                        id=FTL.Identifier("style"),
-                        value=CONCAT(
-                            FTL.TextElement("width: "),
-                            COPY(
-                                "browser/chrome/browser/sanitize.dtd",
-                                "sanitizeDialog2.width",
-                                )
-                            )
-                        )
-                    ]
-                ),
-            ]
-        )
-
deleted file mode 100644
--- a/python/l10n/fluent_migrations/bug_1498448_certificateManager.py
+++ /dev/null
@@ -1,404 +0,0 @@
-# coding=utf8
-
-# Any copyright is dedicated to the Public Domain.
-# http://creativecommons.org/publicdomain/zero/1.0/
-
-from __future__ import absolute_import
-import fluent.syntax.ast as FTL
-from fluent.migrate.helpers import transforms_from
-from fluent.migrate import COPY
-from fluent.migrate import REPLACE
-from fluent.migrate import CONCAT
-from fluent.migrate.helpers import VARIABLE_REFERENCE
-from fluent.migrate.helpers import TERM_REFERENCE
-from fluent.migrate.helpers import MESSAGE_REFERENCE
-
-def migrate(ctx):
-    """Bug 1498448 - Migrate Certificate Manager Dialog to use fluent for localization, part {index}."""
-
-    ctx.add_transforms(
-        "security/manager/security/certificates/certManager.ftl",
-        "security/manager/security/certificates/certManager.ftl",
-        transforms_from(
-"""
-certmgr-title =
-    .title = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.title") }
-
-certmgr-tab-mine =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.tab.mine") }
-
-certmgr-tab-people =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.tab.others2") }
-
-certmgr-tab-servers =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.tab.websites3") }
-
-certmgr-tab-ca =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.tab.ca") }
-
-certmgr-mine = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.mine2") }
-certmgr-people = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.others2") }
-certmgr-servers = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.websites3") }
-certmgr-ca = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.cas2") }
-
-certmgr-detail-general-tab-title =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.detail.general_tab.title") }
-    .accesskey = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.detail.general_tab.accesskey") }
-
-certmgr-detail-pretty-print-tab-title =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.detail.prettyprint_tab.title") }
-    .accesskey = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.detail.prettyprint_tab.accesskey") }
-
-certmgr-pending-label =
-    .value = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.pending.label") }
-
-certmgr-subject-info-label =
-    .value = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.subjectinfo.label") }
-
-certmgr-issuer-info-label =
-    .value = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.issuerinfo.label") }
-
-certmgr-period-of-validity-label =
-    .value = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.periodofvalidity.label") }
-
-certmgr-fingerprints-label =
-    .value = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.fingerprints.label") }
-
-certmgr-cert-detail =
-    .title = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.certdetail.title") }
-    .buttonlabelaccept = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.close.label") }
-    .buttonaccesskeyaccept = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.close.accesskey") }
-
-certmgr-cert-detail-cn =
-    .value = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.certdetail.cn") }
-
-certmgr-cert-detail-o =
-    .value = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.certdetail.o") }
-
-certmgr-cert-detail-ou =
-    .value = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.certdetail.ou") }
-
-certmgr-cert-detail-serialnumber =
-    .value = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.certdetail.serialnumber") }
-
-certmgr-cert-detail-sha256-fingerprint =
-    .value = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.certdetail.sha256fingerprint") }
-
-certmgr-cert-detail-sha1-fingerprint =
-    .value = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.certdetail.sha1fingerprint") }
-
-certmgr-edit-cert-edit-trust = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.editcert.edittrust") }
-
-certmgr-edit-cert-trust-ssl =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.editcert.trustssl") }
-
-certmgr-edit-cert-trust-email =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.editcert.trustemail") }
-
-certmgr-cert-name =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.certname") }
-
-certmgr-cert-server =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.certserver") }
-
-certmgr-override-lifetime
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.override_lifetime") }
-
-certmgr-token-name =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.tokenname") }
-
-certmgr-begins-label =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.begins") }
-
-certmgr-expires-label =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.expires") }
-
-certmgr-email =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.email") }
-
-certmgr-serial =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.serial") }
-
-certmgr-view =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.view2.label") }
-    .accesskey = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.view2.accesskey") }
-
-certmgr-edit =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.edit3.label") }
-    .accesskey = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.edit3.accesskey") }
-
-certmgr-export =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.export.label") }
-    .accesskey = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.export.accesskey") }
-
-certmgr-delete =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.delete2.label") }
-    .accesskey = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.delete2.accesskey") }
-
-certmgr-delete-builtin =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.delete_builtin.label") }
-    .accesskey = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.delete_builtin.accesskey") }
-
-certmgr-backup =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.backup2.label") }
-    .accesskey = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.backup2.accesskey") }
-
-certmgr-backup-all =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.backupall2.label") }
-    .accesskey = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.backupall2.accesskey") }
-
-certmgr-restore =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.restore2.label") }
-    .accesskey = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.restore2.accesskey") }
-
-certmgr-details =
-    .value = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.details.label") }
-    .accesskey = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.details.accesskey") }
-
-certmgr-fields=
-    .value = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.fields.label") }
-    .accesskey = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.fields.accesskey") }
-
-certmgr-hierarchy =
-    .value = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.hierarchy.label") }
-    .accesskey = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.hierarchy.accesskey2") }
-
-certmgr-add-exception =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.addException.label") }
-    .accesskey = { COPY("security/manager/chrome/pippki/certManager.dtd", "certmgr.addException.accesskey") }
-
-exception-mgr =
-    .title = { COPY("security/manager/chrome/pippki/certManager.dtd", "exceptionMgr.title") }
-
-exception-mgr-extra-button =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "exceptionMgr.exceptionButton.label") }
-    .accesskey = { COPY("security/manager/chrome/pippki/certManager.dtd", "exceptionMgr.exceptionButton.accesskey") }
-
-exception-mgr-supplemental-warning = { COPY("security/manager/chrome/pippki/certManager.dtd", "exceptionMgr.supplementalWarning") }
-
-exception-mgr-cert-location-url =
-    .value = { COPY("security/manager/chrome/pippki/certManager.dtd", "exceptionMgr.certlocation.url") }
-
-exception-mgr-cert-location-download =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "exceptionMgr.certlocation.download") }
-    .accesskey = { COPY("security/manager/chrome/pippki/certManager.dtd", "exceptionMgr.certlocation.accesskey") }
-
-exception-mgr-cert-status-view-cert =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "exceptionMgr.certstatus.viewCert") }
-    .accesskey = { COPY("security/manager/chrome/pippki/certManager.dtd", "exceptionMgr.certstatus.accesskey") }
-
-exception-mgr-permanent =
-    .label = { COPY("security/manager/chrome/pippki/certManager.dtd", "exceptionMgr.permanent.label") }
-    .accesskey = { COPY("security/manager/chrome/pippki/certManager.dtd", "exceptionMgr.permanent.accesskey") }
-
-pk11-bad-password = { COPY("security/manager/chrome/pipnss/pipnss.properties", "PK11BadPassword") }
-pkcs12-decode-err = { COPY("security/manager/chrome/pipnss/pipnss.properties", "PKCS12DecodeErr") }
-pkcs12-unknown-err-restore = { COPY("security/manager/chrome/pipnss/pipnss.properties", "PKCS12UnknownErrRestore") }
-pkcs12-unknown-err-backup = { COPY("security/manager/chrome/pipnss/pipnss.properties", "PKCS12UnknownErrBackup") }
-pkcs12-unknown-err = { COPY("security/manager/chrome/pipnss/pipnss.properties", "PKCS12UnknownErr") }
-pkcs12-info-no-smartcard-backup = { COPY("security/manager/chrome/pipnss/pipnss.properties", "PKCS12InfoNoSmartcardBackup") }
-pkcs12-dup-data = { COPY("security/manager/chrome/pipnss/pipnss.properties", "PKCS12DupData") }
-
-choose-p12-backup-file-dialog = { COPY("security/manager/chrome/pippki/pippki.properties", "chooseP12BackupFileDialog") }
-file-browse-pkcs12-spec = { COPY("security/manager/chrome/pippki/pippki.properties", "file_browse_PKCS12_spec") }
-choose-p12-restore-file-dialog = { COPY("security/manager/chrome/pippki/pippki.properties", "chooseP12RestoreFileDialog2") }
-file-browse-certificate-spec = { COPY("security/manager/chrome/pippki/pippki.properties", "file_browse_Certificate_spec") }
-import-ca-certs-prompt = { COPY("security/manager/chrome/pippki/pippki.properties", "importCACertsPrompt") }
-import-email-cert-prompt = { COPY("security/manager/chrome/pippki/pippki.properties", "importEmailCertPrompt") }
-
-delete-user-cert-title =
-    .title = { COPY("security/manager/chrome/pippki/pippki.properties", "deleteUserCertTitle") }
-
-delete-ssl-cert-title =
-    .title = { COPY("security/manager/chrome/pippki/pippki.properties", "deleteSslCertTitle3") }
-
-delete-ca-cert-title =
-    .title = { COPY("security/manager/chrome/pippki/pippki.properties", "deleteCaCertTitle2") }
-
-delete-email-cert-title =
-    .title = { COPY("security/manager/chrome/pippki/pippki.properties", "deleteEmailCertTitle") }
-
-delete-user-cert-confirm = { COPY("security/manager/chrome/pippki/pippki.properties", "deleteUserCertConfirm") }
-delete-user-cert-impact = { COPY("security/manager/chrome/pippki/pippki.properties", "deleteUserCertImpact") }
-delete-ssl-cert-confirm = { COPY("security/manager/chrome/pippki/pippki.properties", "deleteSslCertConfirm3") }
-delete-ssl-cert-impact = { COPY("security/manager/chrome/pippki/pippki.properties", "deleteSslCertImpact3") }
-delete-ca-cert-confirm = { COPY("security/manager/chrome/pippki/pippki.properties", "deleteCaCertConfirm2") }
-delete-ca-cert-impact = { COPY("security/manager/chrome/pippki/pippki.properties", "deleteCaCertImpactX2") }
-delete-email-cert-confirm = { COPY("security/manager/chrome/pippki/pippki.properties", "deleteEmailCertConfirm") }
-delete-email-cert-impact = { COPY("security/manager/chrome/pippki/pippki.properties", "deleteEmailCertImpactDesc") }
-
-cert-verified = { COPY("security/manager/chrome/pippki/pippki.properties", "certVerified") }
-
-not-present =
-    .value = { COPY("security/manager/chrome/pippki/pippki.properties", "notPresent") }
-
-verify-ssl-client =
-    .value = { COPY("security/manager/chrome/pipnss/pipnss.properties", "VerifySSLClient") }
-
-verify-ssl-server =
-    .value = { COPY("security/manager/chrome/pipnss/pipnss.properties", "VerifySSLServer") }
-
-verify-ssl-ca =
-    .value = { COPY("security/manager/chrome/pipnss/pipnss.properties", "VerifySSLCA") }
-
-verify-email-signer =
-    .value = { COPY("security/manager/chrome/pipnss/pipnss.properties", "VerifyEmailSigner") }
-
-verify-email-recip =
-    .value = { COPY("security/manager/chrome/pipnss/pipnss.properties", "VerifyEmailRecip") }
-
-cert-not-verified-cert-revoked = { COPY("security/manager/chrome/pippki/pippki.properties", "certNotVerified_CertRevoked") }
-cert-not-verified-cert-expired = { COPY("security/manager/chrome/pippki/pippki.properties", "certNotVerified_CertExpired") }
-cert-not-verified-cert-not-trusted = { COPY("security/manager/chrome/pippki/pippki.properties", "certNotVerified_CertNotTrusted") }
-cert-not-verified-issuer-not-trusted = { COPY("security/manager/chrome/pippki/pippki.properties", "certNotVerified_IssuerNotTrusted") }
-cert-not-verified-issuer-unknown = { COPY("security/manager/chrome/pippki/pippki.properties", "certNotVerified_IssuerUnknown") }
-cert-not-verified-ca-invalid = { COPY("security/manager/chrome/pippki/pippki.properties", "certNotVerified_CAInvalid") }
-cert-not-verified_algorithm-disabled = { COPY("security/manager/chrome/pippki/pippki.properties", "certNotVerified_AlgorithmDisabled") }
-cert-not-verified-unknown = { COPY("security/manager/chrome/pippki/pippki.properties", "certNotVerified_Unknown") }
-
-add-exception-invalid-header = { COPY("security/manager/chrome/pippki/pippki.properties", "addExceptionInvalidHeader") }
-add-exception-domain-mismatch-short = { COPY("security/manager/chrome/pippki/pippki.properties", "addExceptionDomainMismatchShort") }
-add-exception-domain-mismatch-long = { COPY("security/manager/chrome/pippki/pippki.properties", "addExceptionDomainMismatchLong2") }
-add-exception-expired-short = { COPY("security/manager/chrome/pippki/pippki.properties", "addExceptionExpiredShort") }
-add-exception-expired-long = { COPY("security/manager/chrome/pippki/pippki.properties", "addExceptionExpiredLong2") }
-add-exception-unverified-or-bad-signature-short = { COPY("security/manager/chrome/pippki/pippki.properties", "addExceptionUnverifiedOrBadSignatureShort") }
-add-exception-unverified-or-bad-signature-long = { COPY("security/manager/chrome/pippki/pippki.properties", "addExceptionUnverifiedOrBadSignatureLong2") }
-add-exception-valid-short = { COPY("security/manager/chrome/pippki/pippki.properties", "addExceptionValidShort") }
-add-exception-valid-long = { COPY("security/manager/chrome/pippki/pippki.properties", "addExceptionValidLong") }
-add-exception-checking-short = { COPY("security/manager/chrome/pippki/pippki.properties", "addExceptionCheckingShort") }
-add-exception-checking-long = { COPY("security/manager/chrome/pippki/pippki.properties", "addExceptionCheckingLong2") }
-add-exception-no-cert-short = { COPY("security/manager/chrome/pippki/pippki.properties", "addExceptionNoCertShort") }
-add-exception-no-cert-long = { COPY("security/manager/chrome/pippki/pippki.properties", "addExceptionNoCertLong2") }
-""")
-)
-
-    ctx.add_transforms(
-    "security/manager/security/certificates/certManager.ftl",
-    "security/manager/security/certificates/certManager.ftl",
-    [
-        FTL.Message(
-            id=FTL.Identifier("edit-trust-ca"),
-            value=REPLACE(
-                "security/manager/chrome/pippki/pippki.properties",
-                "editTrustCA",
-                {
-                    "%S": VARIABLE_REFERENCE("certName")
-                },
-            )
-        ),
-
-            FTL.Message(
-                id=FTL.Identifier("cert-with-serial"),
-                attributes=[
-                    FTL.Attribute(
-                        id=FTL.Identifier("value"),
-                        value=REPLACE(
-                            "security/manager/chrome/pippki/pippki.properties",
-                            "certWithSerial",
-                            {
-                                "%1$S": VARIABLE_REFERENCE("serialNumber")
-                            },
-                        )
-                    )
-                ]
-            ),
-
-            FTL.Message(
-                id=FTL.Identifier("cert-viewer-title"),
-                attributes=[
-                    FTL.Attribute(
-                        id=FTL.Identifier("title"),
-                        value=REPLACE(
-                            "security/manager/chrome/pippki/pippki.properties",
-                            "certViewerTitle",
-                            {
-                                "%1$S": VARIABLE_REFERENCE("certName")
-                            },
-                        )
-                    )
-                ]
-            ),
-
-            FTL.Message(
-                id=FTL.Identifier("add-exception-branded-warning"),
-                value=REPLACE(
-                    "security/manager/chrome/pippki/pippki.properties",
-                    "addExceptionBrandedWarning2",
-                    {
-                        "%S": TERM_REFERENCE("-brand-short-name")
-                    },
-                )
-            ),
-
-            FTL.Message(
-                id=FTL.Identifier("certmgr-edit-ca-cert"),
-                attributes=[
-                    FTL.Attribute(
-                        id=FTL.Identifier("title"),
-                        value=COPY(
-                                "security/manager/chrome/pippki/certManager.dtd",
-                                "certmgr.editcacert.title",
-                            )
-                        ),
-                    FTL.Attribute(
-                        id=FTL.Identifier("style"),
-                        value=CONCAT(
-                            FTL.TextElement("width: 48em;"),
-                        )
-                    )
-                ]
-            ),
-
-            FTL.Message(
-                id=FTL.Identifier("certmgr-delete-cert"),
-                attributes=[
-                    FTL.Attribute(
-                        id=FTL.Identifier("title"),
-                        value=COPY(
-                                "security/manager/chrome/pippki/certManager.dtd",
-                                "certmgr.deletecert.title",
-                            )
-                        ),
-                    FTL.Attribute(
-                        id=FTL.Identifier("style"),
-                        value=CONCAT(
-                            FTL.TextElement("width: 48em; height: 24em;"),
-                        )
-                    )
-                ]
-            ),
-
-            FTL.Message(
-                id=FTL.Identifier("certmgr-begins-value"),
-                attributes=[
-                    FTL.Attribute(
-                        id=FTL.Identifier("value"),
-                        value=FTL.Pattern(
-                            elements=[
-                                FTL.Placeable(
-                                    expression=MESSAGE_REFERENCE("certmgr-begins-label.label")
-                                )
-                            ]
-                        )
-                    )
-                ]
-            ),
-
-            FTL.Message(
-                id=FTL.Identifier("certmgr-expires-value"),
-                attributes=[
-                    FTL.Attribute(
-                        id=FTL.Identifier("value"),
-                        value=FTL.Pattern(
-                            elements=[
-                                FTL.Placeable(
-                                    expression=MESSAGE_REFERENCE("certmgr-expires-label.label")
-                                )
-                            ]
-                        )
-                    )
-                ]
-            ),
-        ]
-    )
-
deleted file mode 100644
--- a/python/l10n/fluent_migrations/bug_1498451_deviceManager.py
+++ /dev/null
@@ -1,182 +0,0 @@
-# coding=utf8
-
-# Any copyright is dedicated to the Public Domain.
-# http://creativecommons.org/publicdomain/zero/1.0/
-
-from __future__ import absolute_import
-import fluent.syntax.ast as FTL
-from fluent.migrate.helpers import transforms_from
-from fluent.migrate import COPY
-from fluent.migrate import REPLACE
-from fluent.migrate import CONCAT
-from fluent.migrate.helpers import VARIABLE_REFERENCE
-
-def migrate(ctx):
-    """Bug 1498451 - Migrate Device Manager Dialog of Preferences Section to use Fluent for localization, part {index}."""
-
-    ctx.add_transforms(
-        "security/manager/security/certificates/deviceManager.ftl",
-        "security/manager/security/certificates/deviceManager.ftl",
-        transforms_from(
-"""
-devmgr =
-  .title = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "devmgr.title") }
-  .style = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "devmgr.style2") }
-
-devmgr-devlist =
-  .label = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "devmgr.devlist.label") }
-
-devmgr-header-details =
-  .label = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "devmgr.details.title") }
-
-devmgr-header-value =
-  .label = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "devmgr.details.title2") }
-
-devmgr-button-login =
-  .label = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "devmgr.button.login.label") }
-  .accesskey = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "devmgr.button.login.accesskey") }
-
-devmgr-button-logout =
-  .label = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "devmgr.button.logout.label") }
-  .accesskey = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "devmgr.button.logout.accesskey") }
-
-devmgr-button-changepw =
-  .label = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "devmgr.button.changepw.label") }
-  .accesskey = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "devmgr.button.changepw.accesskey") }
-
-devmgr-button-load =
-  .label = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "devmgr.button.load.label") }
-  .accesskey = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "devmgr.button.load.accesskey") }
-
-devmgr-button-unload =
-  .label = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "devmgr.button.unload.label") }
-  .accesskey = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "devmgr.button.unload.accesskey") }
-
-load-device =
-  .title = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "loaddevice.title2") }
-
-load-device-info = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "loaddevice.info") }
-
-load-device-modname =
-  .value = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "loaddevice.modname2") }
-  .accesskey = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "loaddevice.modname2.accesskey") }
-
-load-device-modname-default =
-  .value = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "loaddevice.modname.default") }
-
-load-device-filename =
-  .value = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "loaddevice.filename2") }
-  .accesskey = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "loaddevice.filename2.accesskey") }
-
-load-device-browse =
-  .label = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "loaddevice.browse") }
-  .accesskey = { COPY("security/manager/chrome/pippki/deviceManager.dtd", "loaddevice.browse.accesskey") }
-
-devinfo-status =
-  .label = { COPY("security/manager/chrome/pippki/pippki.properties", "devinfo_status") }
-
-devinfo-status-disabled =
-  .label = { COPY("security/manager/chrome/pippki/pippki.properties", "devinfo_stat_disabled") }
-
-devinfo-status-not-present =
-  .label = { COPY("security/manager/chrome/pippki/pippki.properties", "devinfo_stat_notpresent") }
-
-devinfo-status-uninitialized =
-  .label = { COPY("security/manager/chrome/pippki/pippki.properties", "devinfo_stat_uninitialized") }
-
-devinfo-status-not-logged-in =
-  .label = { COPY("security/manager/chrome/pippki/pippki.properties", "devinfo_stat_notloggedin") }
-
-devinfo-status-logged-in
-  .label = { COPY("security/manager/chrome/pippki/pippki.properties", "devinfo_stat_loggedin") }
-
-devinfo-status-ready =
-  .label = { COPY("security/manager/chrome/pippki/pippki.properties", "devinfo_stat_ready") }
-
-devinfo-desc =
-  .label = { COPY("security/manager/chrome/pippki/pippki.properties", "devinfo_desc") }
-
-devinfo-man-id =
-  .label = { COPY("security/manager/chrome/pippki/pippki.properties", "devinfo_manID") }
-
-devinfo-hwversion =
-  .label = { COPY("security/manager/chrome/pippki/pippki.properties", "devinfo_hwversion") }
-
-devinfo-fwversion =
-  .label = { COPY("security/manager/chrome/pippki/pippki.properties", "devinfo_fwversion") }
-
-devinfo-modname =
-  .label = { COPY("security/manager/chrome/pippki/pippki.properties", "devinfo_modname") }
-
-devinfo-modpath =
-  .label = { COPY("security/manager/chrome/pippki/pippki.properties", "devinfo_modpath") }
-
-login-failed = { COPY("security/manager/chrome/pippki/pippki.properties", "login_failed") }
-
-devinfo-label =
-  .label = { COPY("security/manager/chrome/pippki/pippki.properties", "devinfo_label") }
-
-devinfo-serialnum =
-  .label = { COPY("security/manager/chrome/pippki/pippki.properties", "devinfo_serialnum") }
-
-fips-nonempty-password-required = { COPY("security/manager/chrome/pippki/pippki.properties", "fips_nonempty_password_required") }
-unable-to-toggle-fips = { COPY("security/manager/chrome/pippki/pippki.properties", "unable_to_toggle_fips") }
-load-pk11-module-file-picker-title = { COPY("security/manager/chrome/pippki/pippki.properties", "loadPK11ModuleFilePickerTitle") }
-
-load-module-help-empty-module-name =
-  .value = { COPY("security/manager/chrome/pippki/pippki.properties", "loadModuleHelp_emptyModuleName") }
-
-load-module-help-root-certs-module-name =
-  .value = { COPY("security/manager/chrome/pippki/pippki.properties", "loadModuleHelp_rootCertsModuleName") }
-
-add-module-failure = { COPY("security/manager/chrome/pipnss/pipnss.properties", "AddModuleFailure") }
-del-module-warning = { COPY("security/manager/chrome/pipnss/pipnss.properties", "DelModuleWarning") }
-del-module-error = { COPY("security/manager/chrome/pipnss/pipnss.properties", "DelModuleError") }
-""")
-)
-
-    ctx.add_transforms(
-        "security/manager/security/certificates/deviceManager.ftl",
-        "security/manager/security/certificates/deviceManager.ftl",
-        [
-            FTL.Message(
-            id=FTL.Identifier("devmgr-button-enable-fips"),
-            attributes=[
-                FTL.Attribute(
-                    id=FTL.Identifier("label"),
-                    value=COPY(
-                            "security/manager/chrome/pippki/pippki.properties",
-                            "enable_fips",
-                        )
-                    ),
-                FTL.Attribute(
-                    id=FTL.Identifier("accesskey"),
-                    value=COPY(
-                            "security/manager/chrome/pippki/deviceManager.dtd",
-                            "devmgr.button.fips.accesskey",
-                            )
-                        )
-                    ]
-                ),
-            FTL.Message(
-            id=FTL.Identifier("devmgr-button-disable-fips"),
-            attributes=[
-                FTL.Attribute(
-                    id=FTL.Identifier("label"),
-                    value=COPY(
-                            "security/manager/chrome/pippki/pippki.properties",
-                            "disable_fips",
-                            )
-                        ),
-                    FTL.Attribute(
-                        id=FTL.Identifier("accesskey"),
-                        value=COPY(
-                            "security/manager/chrome/pippki/deviceManager.dtd",
-                            "devmgr.button.fips.accesskey",
-                            )
-                        )
-                    ]
-                ),
-            ]
-        )
-
deleted file mode 100644
--- a/python/l10n/fluent_migrations/bug_1501900_aboutdevtools.py
+++ /dev/null
@@ -1,188 +0,0 @@
-from __future__ import absolute_import
-import fluent.syntax.ast as FTL
-from fluent.migrate.helpers import transforms_from
-from fluent.migrate.helpers import VARIABLE_REFERENCE
-from fluent.migrate.helpers import TERM_REFERENCE
-from fluent.migrate.helpers import MESSAGE_REFERENCE
-from fluent.migrate import REPLACE
-from fluent.migrate import COPY
-from fluent.migrate import CONCAT
-
-def migrate(ctx):
-    """Bug 1501900 -  Migrate about:devtools to Fluent, part {index}"""
-
-    ctx.add_transforms(
-        "devtools/startup/aboutDevTools.ftl",
-        "devtools/startup/aboutDevTools.ftl",
-        transforms_from(
-"""
-head-title = { COPY("devtools/startup/aboutdevtools.dtd", "aboutDevtools.headTitle")}
-enable-title = { COPY("devtools/startup/aboutdevtools.dtd", "aboutDevtools.enable.title")}
-enable-inspect-element-title = { COPY("devtools/startup/aboutdevtools.dtd", "aboutDevtools.enable.inspectElementTitle")}
-enable-inspect-element-message = { COPY("devtools/startup/aboutdevtools.dtd", "aboutDevtools.enable.inspectElementMessage")}
-enable-about-debugging-message ={ COPY("devtools/startup/aboutdevtools.dtd", "aboutDevtools.enable.aboutDebuggingMessage")}
-enable-key-shortcut-message = { COPY("devtools/startup/aboutdevtools.dtd", "aboutDevtools.enable.keyShortcutMessage")}
-enable-menu-message = { COPY("devtools/startup/aboutdevtools.dtd", "aboutDevtools.enable.menuMessage2")}
-enable-common-message = { COPY("devtools/startup/aboutdevtools.dtd", "aboutDevtools.enable.commonMessage")}
-enable-learn-more-link = { COPY("devtools/startup/aboutdevtools.dtd", "aboutDevtools.enable.learnMoreLink")}
-enable-enable-button = { COPY("devtools/startup/aboutdevtools.dtd", "aboutDevtools.enable.enableButton")}
-enable-close-button = { COPY("devtools/startup/aboutdevtools.dtd", "aboutDevtools.enable.closeButton2")}
-welcome-title = { COPY("devtools/startup/aboutdevtools.dtd", "aboutDevtools.welcome.title")}
-newsletter-title = { COPY("devtools/startup/aboutdevtools.dtd", "aboutDevtools.newsletter.title")}
-newsletter-message = { COPY("devtools/startup/aboutdevtools.dtd", "aboutDevtools.newsletter.message")}
-newsletter-email-placeholder =
-    .placeholder = { COPY("devtools/startup/aboutdevtools.dtd", "aboutDevtools.newsletter.email.placeholder")}
-newsletter-subscribe-button = { COPY("devtools/startup/aboutdevtools.dtd", "aboutDevtools.newsletter.subscribeButton")}
-newsletter-thanks-title = { COPY("devtools/startup/aboutdevtools.dtd", "aboutDevtools.newsletter.thanks.title")}
-newsletter-thanks-message = { COPY("devtools/startup/aboutdevtools.dtd", "aboutDevtools.newsletter.thanks.message")}
-footer-title = { COPY("devtools/startup/aboutdevtools.dtd", "aboutDevtools.footer.title")}
-footer-message = { COPY("devtools/startup/aboutdevtools.dtd", "aboutDevtools.footer.message")}
-footer-learn-more-link = { COPY("devtools/startup/aboutdevtools.dtd", "aboutDevtools.footer.learnMoreLink")}
-features-learn-more = { COPY("devtools/startup/aboutdevtools.properties", "features.learnMore")}
-features-inspector-title = { COPY("devtools/startup/aboutdevtools.properties", "features.inspector.title")}
-features-console-title = { COPY("devtools/startup/aboutdevtools.properties", "features.console.title")}
-features-debugger-title = { COPY("devtools/startup/aboutdevtools.properties", "features.debugger.title")}
-features-network-title = { COPY("devtools/startup/aboutdevtools.properties", "features.network.title")}
-features-storage-title = { COPY("devtools/startup/aboutdevtools.properties", "features.storage.title")}
-features-responsive-title = { COPY("devtools/startup/aboutdevtools.properties", "features.responsive.title")}
-features-visual-editing-title = { COPY("devtools/startup/aboutdevtools.properties", "features.visualediting.title")}
-features-performance-title = { COPY("devtools/startup/aboutdevtools.properties", "features.performance.title")}
-features-memory-title = { COPY("devtools/startup/aboutdevtools.properties", "features.memory.title")}
-"""
-        )
-    )
-
-    ctx.add_transforms(
-        "devtools/startup/aboutDevTools.ftl",
-        "devtools/startup/aboutDevTools.ftl",
-        [
-            FTL.Message(
-                id=FTL.Identifier("newsletter-privacy-label"),
-                value=REPLACE(
-                    "devtools/startup/aboutdevtools.dtd",
-                    "aboutDevtools.newsletter.privacy.label",
-                    {
-                        "<a class='external' href='https://www.mozilla.org/privacy/'>": FTL.TextElement('<a data-l10n-name="privacy-policy">')
-                    }
-                )
-            ),
-            FTL.Message(
-                id=FTL.Identifier("features-inspector-desc"),
-                value=CONCAT(
-                    COPY(
-                        "devtools/startup/aboutdevtools.properties",
-                        "features.inspector.desc",
-                    ),
-                    FTL.TextElement(' <a data-l10n-name="learn-more">'),
-                    MESSAGE_REFERENCE("features-learn-more"),
-                    FTL.TextElement("</a>")
-                )
-            ),
-            FTL.Message(
-                id=FTL.Identifier("features-console-desc"),
-                value=CONCAT(
-                    COPY(
-                        "devtools/startup/aboutdevtools.properties",
-                        "features.console.desc",
-                    ),
-                    FTL.TextElement(' <a data-l10n-name="learn-more">'),
-                    MESSAGE_REFERENCE("features-learn-more"),
-                    FTL.TextElement("</a>")
-                )
-            ),
-            FTL.Message(
-                id=FTL.Identifier("features-debugger-desc"),
-                value=CONCAT(
-                    COPY(
-                        "devtools/startup/aboutdevtools.properties",
-                        "features.debugger.desc",
-                    ),
-                    FTL.TextElement(' <a data-l10n-name="learn-more">'),
-                    MESSAGE_REFERENCE("features-learn-more"),
-                    FTL.TextElement("</a>")
-                )
-            ),
-            FTL.Message(
-                id=FTL.Identifier("features-network-desc"),
-                value=CONCAT(
-                    COPY(
-                        "devtools/startup/aboutdevtools.properties",
-                        "features.network.desc",
-                    ),
-                    FTL.TextElement(' <a data-l10n-name="learn-more">'),
-                    MESSAGE_REFERENCE("features-learn-more"),
-                    FTL.TextElement("</a>")
-                )
-            ),
-            FTL.Message(
-                id=FTL.Identifier("features-storage-desc"),
-                value=CONCAT(
-                    COPY(
-                        "devtools/startup/aboutdevtools.properties",
-                        "features.storage.desc",
-                    ),
-                    FTL.TextElement(' <a data-l10n-name="learn-more">'),
-                    MESSAGE_REFERENCE("features-learn-more"),
-                    FTL.TextElement("</a>")
-                )
-            ),
-            FTL.Message(
-                id=FTL.Identifier("features-responsive-desc"),
-                value=CONCAT(
-                    COPY(
-                        "devtools/startup/aboutdevtools.properties",
-                        "features.responsive.desc",
-                    ),
-                    FTL.TextElement(' <a data-l10n-name="learn-more">'),
-                    MESSAGE_REFERENCE("features-learn-more"),
-                    FTL.TextElement("</a>")
-                )
-            ),
-            FTL.Message(
-                id=FTL.Identifier("features-visual-editing-desc"),
-                value=CONCAT(
-                    COPY(
-                        "devtools/startup/aboutdevtools.properties",
-                        "features.visualediting.desc",
-                    ),
-                    FTL.TextElement(' <a data-l10n-name="learn-more">'),
-                    MESSAGE_REFERENCE("features-learn-more"),
-                    FTL.TextElement("</a>")
-                )
-            ),
-            FTL.Message(
-                id=FTL.Identifier("features-performance-desc"),
-                value=CONCAT(
-                    COPY(
-                        "devtools/startup/aboutdevtools.properties",
-                        "features.performance.desc",
-                    ),
-                    FTL.TextElement(' <a data-l10n-name="learn-more">'),
-                    MESSAGE_REFERENCE("features-learn-more"),
-                    FTL.TextElement("</a>")
-                )
-            ),
-            FTL.Message(
-                id=FTL.Identifier("features-memory-desc"),
-                value=CONCAT(
-                    COPY(
-                        "devtools/startup/aboutdevtools.properties",
-                        "features.memory.desc",
-                    ),
-                    FTL.TextElement(' <a data-l10n-name="learn-more">'),
-                    MESSAGE_REFERENCE("features-learn-more"),
-                    FTL.TextElement("</a>")
-                )
-            ),
-            FTL.Message(
-                id=FTL.Identifier("welcome-message"),
-                value=REPLACE(
-                    "devtools/startup/aboutdevtools.properties",
-                    "welcome.message",
-                    {
-                        "%S": VARIABLE_REFERENCE("shortcut")
-                    }
-                )
-            )
-        ]
-    )
deleted file mode 100644
--- a/python/l10n/fluent_migrations/bug_1502396_changemp_removemp.py
+++ /dev/null
@@ -1,44 +0,0 @@
-# coding=utf8
-
-# Any copyright is dedicated to the Public Domain.
-# http://creativecommons.org/publicdomain/zero/1.0/
-
-from __future__ import absolute_import
-import fluent.syntax.ast as FTL
-from fluent.migrate.helpers import transforms_from
-from fluent.migrate import COPY
-
-
-def migrate(ctx):
-    """Bug 1502396 - Convert change and remove master password dialogs in about:preferences to use Fluent"""
-
-    ctx.add_transforms(
-        "toolkit/toolkit/preferences/preferences.ftl",
-        "toolkit/toolkit/preferences/preferences.ftl",
-        transforms_from(
-            """
-set-password =
-    .title = { COPY(from_path, "setPassword.title") }
-set-password-old-password = { COPY(from_path, "setPassword.oldPassword.label") }
-set-password-new-password = { COPY(from_path, "setPassword.newPassword.label") }
-set-password-reenter-password = { COPY(from_path, "setPassword.reenterPassword.label") }
-set-password-meter = { COPY(from_path, "setPassword.meter.label") }
-set-password-meter-loading = { COPY(from_path, "setPassword.meter.loading") }
-master-password-description = { COPY(from_path, "masterPasswordDescription.label") }
-master-password-warning = { COPY(from_path, "masterPasswordWarning.label") }
-""", from_path="toolkit/chrome/mozapps/preferences/changemp.dtd"))
-
-    ctx.add_transforms(
-        "toolkit/toolkit/preferences/preferences.ftl",
-        "toolkit/toolkit/preferences/preferences.ftl",
-        transforms_from(
-            """
-remove-password =
-    .title = { COPY(from_path, "removePassword.title") }
-remove-info =
-    .label = { COPY(from_path, "removeInfo.label") }
-remove-warning1 = { COPY(from_path, "removeWarning1.label") }
-remove-warning2 = { COPY(from_path, "removeWarning2.label") }
-remove-password-old-password =
-    .label = { COPY(from_path, "setPassword.oldPassword.label") }
-""", from_path="toolkit/chrome/mozapps/preferences/removemp.dtd"))
deleted file mode 100644
--- a/python/l10n/fluent_migrations/bug_1504457_aboutdevtools.py
+++ /dev/null
@@ -1,40 +0,0 @@
-from __future__ import absolute_import
-import fluent.syntax.ast as FTL
-from fluent.migrate.helpers import transforms_from
-from fluent.migrate.helpers import VARIABLE_REFERENCE
-from fluent.migrate.helpers import TERM_REFERENCE
-from fluent.migrate.helpers import MESSAGE_REFERENCE
-from fluent.migrate import REPLACE
-from fluent.migrate import COPY
-from fluent.migrate import CONCAT
-
-def migrate(ctx):
-    """Bug 1504457 -  Migrate subscribe.js strings of about:devtools to Fluent, part {index}"""
-
-    ctx.add_transforms(
-        "devtools/startup/aboutDevTools.ftl",
-        "devtools/startup/aboutDevTools.ftl",
-        transforms_from(
-"""
-newsletter-error-unknown = { COPY("devtools/startup/aboutdevtools.properties", "newsletter.error.unknown")}
-newsletter-error-timeout = { COPY("devtools/startup/aboutdevtools.properties", "newsletter.error.timeout")}
-"""
-        )
-    )
-
-    ctx.add_transforms(
-        "devtools/startup/aboutDevTools.ftl",
-        "devtools/startup/aboutDevTools.ftl",
-        [
-            FTL.Message(
-                id=FTL.Identifier("newsletter-error-common"),
-                value=REPLACE(
-                    "devtools/startup/aboutdevtools.properties",
-                    "newsletter.error.common",
-                    {
-                        "%S": VARIABLE_REFERENCE("errorDescription")
-                    }
-                )
-            )
-        ]
-    )
deleted file mode 100644
--- a/python/l10n/fluent_migrations/bug_1504751_aboutnetworking.py
+++ /dev/null
@@ -1,99 +0,0 @@
-from __future__ import absolute_import
-import fluent.syntax.ast as FTL
-from fluent.migrate.helpers import transforms_from
-from fluent.migrate import CONCAT
-from fluent.migrate import REPLACE
-from fluent.migrate import COPY
-
-
-def migrate(ctx):
-    """ Bug 1504751 - Migrate about:Networking to Fluent, part {index}. """
-
-    ctx.add_transforms(
-        "toolkit/toolkit/about/aboutNetworking.ftl",
-        "toolkit/toolkit/about/aboutNetworking.ftl",
-        transforms_from(
-"""
-title = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.title")}
-warning = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.warning")}
-show-next-time-checkbox = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.showNextTime")}
-ok = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.ok")}
-http = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.HTTP")}
-sockets = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.sockets")}
-dns = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.dns")}
-websockets = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.websockets")}
-refresh = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.refresh")}
-auto-refresh = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.autoRefresh")}
-hostname = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.hostname")}
-port = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.port")}
-http2 = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.http2")}
-ssl = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.ssl")}
-active = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.active")}
-idle = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.idle")}
-host = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.host")}
-tcp = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.tcp")}
-sent = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.sent")}
-received = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.received")}
-family = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.family")}
-trr = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.trr")}
-addresses = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.addresses")}
-expires = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.expires")}
-messages-sent = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.messagesSent")}
-messages-received = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.messagesReceived")}
-bytes-sent = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.bytesSent")}
-bytes-received = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.bytesReceived")}
-logging = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.logging")}
-current-log-file = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.currentLogFile")}
-current-log-modules = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.currentLogModules")}
-set-log-file = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.setLogFile")}
-set-log-modules = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.setLogModules")}
-start-logging = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.startLogging")}
-stop-logging = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.stopLogging")}
-dns-lookup = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.dnsLookup")}
-dns-lookup-button = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.dnsLookupButton")}
-dns-lookup-table-column = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.dnsLookupTableColumn")}
-rcwn = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.rcwn")}
-rcwn-status = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.rcwnStatus")}
-rcwn-cache-won-count = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.rcwnCacheWonCount")}
-rcwn-net-won-count = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.rcwnNetWonCount")}
-total-network-requests = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.totalNetworkRequests")}
-rcwn-operation = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.rcwnOperation")}
-rcwn-perf-open = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.rcwnPerfOpen")}
-rcwn-perf-read = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.rcwnPerfRead")}
-rcwn-perf-write = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.rcwnPerfWrite")}
-rcwn-perf-entry-open = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.rcwnPerfEntryOpen")}
-rcwn-avg-short = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.rcwnAvgShort")}
-rcwn-avg-long = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.rcwnAvgLong")}
-rcwn-std-dev-long = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.rcwnStddevLong")}
-rcwn-cache-slow = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.rcwnCacheSlow")}
-rcwn-cache-not-slow = { COPY("toolkit/chrome/global/aboutNetworking.dtd", "aboutNetworking.rcwnCacheNotSlow")}
-"""
-        )
-    )
-
-    ctx.add_transforms(
-        "toolkit/toolkit/about/aboutNetworking.ftl",
-        "toolkit/toolkit/about/aboutNetworking.ftl",
-        [
-            FTL.Message(
-                id=FTL.Identifier("log-tutorial"),
-                value=REPLACE(
-                    "toolkit/chrome/global/aboutNetworking.dtd",
-                    "aboutNetworking.logTutorial",
-                    {
-                        "href='https://developer.mozilla.org/docs/Mozilla/Debugging/HTTP_logging'": FTL.TextElement('data-l10n-name="logging"')
-                    }
-                )
-            ),
-            FTL.Message(
-                id=FTL.Identifier("dns-domain"),
-                value=CONCAT(
-                    COPY(
-                        "toolkit/chrome/global/aboutNetworking.dtd",
-                        "aboutNetworking.dnsDomain",
-                    ),
-                    FTL.TextElement(":"),
-                )
-            )
-        ]
-    )
deleted file mode 100644
--- a/python/l10n/fluent_migrations/bug_1505846_aboutsearchreset.py
+++ /dev/null
@@ -1,111 +0,0 @@
-# coding=utf8
-
-# Any copyright is dedicated to the Public Domain.
-# http://creativecommons.org/publicdomain/zero/1.0/
-
-from __future__ import absolute_import
-import fluent.syntax.ast as FTL
-from fluent.migrate.helpers import transforms_from
-from fluent.migrate.helpers import TERM_REFERENCE
-from fluent.migrate import COPY
-from fluent.migrate import REPLACE
-from fluent.migrate import CONCAT
-
-def migrate(ctx):
-    """Bug 1505846 Migrate about:searchreset to Fluent, part {index} """
-
-    ctx.add_transforms(
-
-        "browser/browser/aboutSearchReset.ftl",
-        "browser/browser/aboutSearchReset.ftl",
-        transforms_from(
-"""
-tab-title = { COPY("browser/chrome/browser/aboutSearchReset.dtd", "searchreset.tabtitle") }
-page-title = { COPY("browser/chrome/browser/aboutSearchReset.dtd", "searchreset.pageTitle") }
-"""
-        )
-    )
-
-    ctx.add_transforms(
-        "browser/browser/aboutSearchReset.ftl",
-        "browser/browser/aboutSearchReset.ftl",
-        [
-            FTL.Message(
-                id=FTL.Identifier("page-info-outofdate"),
-                value=REPLACE(
-                    "browser/chrome/browser/aboutSearchReset.dtd",
-                    "searchreset.pageInfo1",
-                    {
-                        "&brandShortName;": TERM_REFERENCE("-brand-short-name"),
-                    }
-                )
-            ),
-            FTL.Message(
-                id=FTL.Identifier("page-info-how-to-change"),
-                value=CONCAT(
-                    COPY(
-                        "browser/chrome/browser/aboutSearchReset.dtd",
-                        "searchreset.beforelink.pageInfo2",
-                    ),
-                    FTL.TextElement('<a data-l10n-name="link">'),
-                    COPY(
-                        "browser/chrome/browser/aboutSearchReset.dtd",
-                        "searchreset.link.pageInfo2",
-                    ),
-                    FTL.TextElement("</a>"),
-                    COPY(
-                        "browser/chrome/browser/aboutSearchReset.dtd",
-                        "searchreset.afterlink.pageInfo2",
-                    )
-                )
-            ),
-            FTL.Message(
-                id=FTL.Identifier("no-change-button"),
-                attributes=[
-                    FTL.Attribute(
-                        id=FTL.Identifier("label"),
-                        value=COPY(
-                            "browser/chrome/browser/aboutSearchReset.dtd",
-                            "searchreset.noChangeButton",
-                        )
-                    ),
-                    FTL.Attribute(
-                        id=FTL.Identifier("accesskey"),
-                        value=COPY(
-                            "browser/chrome/browser/aboutSearchReset.dtd",
-                            "searchreset.noChangeButton.access",
-                        )
-                    ),
-                ]
-            ),
-            FTL.Message(
-                id=FTL.Identifier("change-engine-button"),
-                attributes=[
-                    FTL.Attribute(
-                        id=FTL.Identifier("label"),
-                        value=COPY(
-                            "browser/chrome/browser/aboutSearchReset.dtd",
-                            "searchreset.changeEngineButton",
-                        )
-                    ),
-                    FTL.Attribute(
-                        id=FTL.Identifier("accesskey"),
-                        value=COPY(
-                            "browser/chrome/browser/aboutSearchReset.dtd",
-                            "searchreset.changeEngineButton.access",
-                        )
-                    ),
-                ]
-            ),
-            FTL.Message(
-                id=FTL.Identifier("page-info-new-search-engine"),
-                value=CONCAT(
-                    COPY(
-                        "browser/chrome/browser/aboutSearchReset.dtd",
-                        "searchreset.selector.label",
-                    ),
-                    FTL.TextElement(' <span data-l10n-name="default-engine">{ $searchEngine }</span>'),
-                )
-            )
-        ]
-    )
deleted file mode 100644
--- a/python/l10n/fluent_migrations/bug_1507301_aboutSessionRestore.py
+++ /dev/null
@@ -1,103 +0,0 @@
-# coding=utf8
-
-# Any copyright is dedicated to the Public Domain.
-# http://creativecommons.org/publicdomain/zero/1.0/
-
-from __future__ import absolute_import
-import fluent.syntax.ast as FTL
-from fluent.migrate.helpers import transforms_from
-from fluent.migrate import COPY
-from fluent.migrate import CONCAT
-from fluent.migrate import REPLACE
-from fluent.migrate.helpers import TERM_REFERENCE
-from fluent.migrate.helpers import VARIABLE_REFERENCE
-
-def migrate(ctx):
-    """Bug 1507301 - Migrate about:sessionrestore and about:welcomeback to use Fluent for localization, part {index}."""
-
-    ctx.add_transforms(
-        "browser/browser/aboutSessionRestore.ftl",
-        "browser/browser/aboutSessionRestore.ftl",
-        transforms_from(
-"""
-restore-page-tab-title = { COPY("browser/chrome/browser/aboutSessionRestore.dtd", "restorepage.tabtitle") }
-restore-page-error-title = { COPY("browser/chrome/browser/aboutSessionRestore.dtd", "restorepage.errorTitle2") }
-restore-page-problem-desc = { COPY("browser/chrome/browser/aboutSessionRestore.dtd", "restorepage.problemDesc2") }
-restore-page-try-this = { COPY("browser/chrome/browser/aboutSessionRestore.dtd", "restorepage.tryThis2") }
-restore-page-hide-tabs = { COPY("browser/chrome/browser/aboutSessionRestore.dtd", "restorepage.hideTabs") }
-restore-page-show-tabs = { COPY("browser/chrome/browser/aboutSessionRestore.dtd", "restorepage.showTabs") }
-
-restore-page-restore-header =
-    .label = { COPY("browser/chrome/browser/aboutSessionRestore.dtd", "restorepage.restoreHeader") }
-restore-page-list-header =
-    .label = { COPY("browser/chrome/browser/aboutSessionRestore.dtd", "restorepage.listHeader") }
-
-restore-page-try-again-button =
-    .label = { COPY("browser/chrome/browser/aboutSessionRestore.dtd", "restorepage.tryagainButton2") }
-    .accesskey = { COPY("browser/chrome/browser/aboutSessionRestore.dtd", "restorepage.restore.access2") }
-
-restore-page-close-button =
-    .label = { COPY("browser/chrome/browser/aboutSessionRestore.dtd", "restorepage.closeButton2") }
-    .accesskey = { COPY("browser/chrome/browser/aboutSessionRestore.dtd", "restorepage.close.access2") }
-
-welcome-back-tab-title = { COPY("browser/chrome/browser/aboutSessionRestore.dtd", "welcomeback2.tabtitle") }
-welcome-back-page-title = { COPY("browser/chrome/browser/aboutSessionRestore.dtd", "welcomeback2.pageTitle") }
-
-welcome-back-restore-button =
-    .label = { COPY("browser/chrome/browser/aboutSessionRestore.dtd", "welcomeback2.restoreButton") }
-    .accesskey = { COPY("browser/chrome/browser/aboutSessionRestore.dtd", "welcomeback2.restoreButton.access") }
-
-welcome-back-restore-all-label = { COPY("browser/chrome/browser/aboutSessionRestore.dtd", "welcomeback2.restoreAll.label") }
-welcome-back-restore-some-label = { COPY("browser/chrome/browser/aboutSessionRestore.dtd", "welcomeback2.restoreSome.label") }
-""")
-)
-
-
-    ctx.add_transforms(
-        "browser/browser/aboutSessionRestore.ftl",
-        "browser/browser/aboutSessionRestore.ftl",
-        [
-        FTL.Message(
-            id=FTL.Identifier("welcome-back-page-info"),
-            value=REPLACE(
-                "browser/chrome/browser/aboutSessionRestore.dtd",
-                "welcomeback2.pageInfo1",
-                {
-                    "&brandShortName;": TERM_REFERENCE("-brand-short-name")
-                },
-            )
-        ),
-
-        FTL.Message(
-            id=FTL.Identifier("welcome-back-page-info-link"),
-            value=CONCAT(
-                COPY(
-                    "browser/chrome/browser/aboutSessionRestore.dtd",
-                    "welcomeback2.beforelink.pageInfo2"
-                ),
-                FTL.TextElement('<a data-l10n-name="link-more">'),
-                COPY(
-                    "browser/chrome/browser/aboutSessionRestore.dtd",
-                    "welcomeback2.link.pageInfo2"
-                ),
-                FTL.TextElement('</a>'),
-                COPY(
-                    "browser/chrome/browser/aboutSessionRestore.dtd",
-                    "welcomeback2.afterlink.pageInfo2"
-                ),
-            )
-        ),
-
-        FTL.Message(
-            id=FTL.Identifier("restore-page-window-label"),
-            value=REPLACE(
-                "browser/chrome/browser/aboutSessionRestore.dtd",
-                "restorepage.windowLabel",
-                {
-                    "%S": VARIABLE_REFERENCE("windowNumber"),
-                },
-            )
-        )
-    ]
-)
-
deleted file mode 100644
--- a/python/l10n/fluent_migrations/bug_1508131_aboutServiceWorkers.py
+++ /dev/null
@@ -1,147 +0,0 @@
-# coding=utf8
-
-# Any copyright is dedicated to the Public Domain.
-# http://creativecommons.org/publicdomain/zero/1.0/
-
-from __future__ import absolute_import
-import fluent.syntax.ast as FTL
-from fluent.migrate.helpers import transforms_from
-from fluent.migrate import COPY
-from fluent.migrate import CONCAT
-from fluent.migrate import REPLACE
-from fluent.migrate.helpers import TERM_REFERENCE
-from fluent.migrate.helpers import VARIABLE_REFERENCE
-
-def migrate(ctx):
-    """Bug 1508131 - Migrate about:serviceworkers to use Fluent for localization, part {index}."""
-
-    ctx.add_transforms(
-        "toolkit/toolkit/about/aboutServiceWorkers.ftl",
-        "toolkit/toolkit/about/aboutServiceWorkers.ftl",
-        transforms_from(
-"""
-about-service-workers-title = { COPY("toolkit/chrome/global/aboutServiceWorkers.dtd", "aboutServiceWorkers.title") }
-about-service-workers-main-title = { COPY("toolkit/chrome/global/aboutServiceWorkers.dtd", "aboutServiceWorkers.maintitle") }
-about-service-workers-warning-not-enabled = { COPY("toolkit/chrome/global/aboutServiceWorkers.dtd", "aboutServiceWorkers.warning_not_enabled") }
-about-service-workers-warning-no-service-workers = { COPY("toolkit/chrome/global/aboutServiceWorkers.dtd", "aboutServiceWorkers.warning_no_serviceworkers") }
-
-update-button = { COPY("toolkit/chrome/global/aboutServiceWorkers.properties", "update") }
-unregister-button = { COPY("toolkit/chrome/global/aboutServiceWorkers.properties", "unregister") }
-unregister-error = { COPY("toolkit/chrome/global/aboutServiceWorkers.properties", "unregisterError") }
-waiting = { COPY("toolkit/chrome/global/aboutServiceWorkers.properties", "waiting") }
-""")
-)
-
-    ctx.add_transforms(
-        "toolkit/toolkit/about/aboutServiceWorkers.ftl",
-        "toolkit/toolkit/about/aboutServiceWorkers.ftl",
-        [
-        FTL.Message(
-            id=FTL.Identifier("origin-title"),
-            value=REPLACE(
-                "toolkit/chrome/global/aboutServiceWorkers.properties",
-                "title",
-                {
-                    "%S": VARIABLE_REFERENCE("originTitle"),
-                },
-            )
-        ),
-
-        FTL.Message(
-            id=FTL.Identifier("app-title"),
-            value=REPLACE(
-                "toolkit/chrome/global/aboutServiceWorkers.properties",
-                "b2gtitle",
-                {
-                    "%1$S": TERM_REFERENCE("-brand-short-name"),
-                    "%2$S": VARIABLE_REFERENCE("appId"),
-                    "%3$S": VARIABLE_REFERENCE("isInIsolatedElement"),
-                },
-            )
-        ),
-
-        FTL.Message(
-            id=FTL.Identifier("scope"),
-            value=CONCAT(
-                FTL.TextElement('<strong>'),
-                COPY(
-                    "toolkit/chrome/global/aboutServiceWorkers.properties",
-                    "scope"
-                ),
-                FTL.TextElement('</strong> { $name }'),
-            )
-        ),
-
-        FTL.Message(
-            id=FTL.Identifier("script-spec"),
-            value=CONCAT(
-                FTL.TextElement('<strong>'),
-                COPY(
-                    "toolkit/chrome/global/aboutServiceWorkers.properties",
-                    "scriptSpec"
-                ),
-                FTL.TextElement('</strong> <a data-l10n-name="link">{ $url }</a>'),
-            )
-        ),
-
-        FTL.Message(
-            id=FTL.Identifier("current-worker-url"),
-            value=CONCAT(
-                FTL.TextElement('<strong>'),
-                COPY(
-                    "toolkit/chrome/global/aboutServiceWorkers.properties",
-                    "currentWorkerURL"
-                ),
-                FTL.TextElement('</strong> <a data-l10n-name="link">{ $url }</a>'),
-            )
-        ),
-
-        FTL.Message(
-            id=FTL.Identifier("active-cache-name"),
-            value=CONCAT(
-                FTL.TextElement('<strong>'),
-                COPY(
-                    "toolkit/chrome/global/aboutServiceWorkers.properties",
-                    "activeCacheName"
-                ),
-                FTL.TextElement('</strong> { $name }')
-            )
-        ),
-
-        FTL.Message(
-            id=FTL.Identifier("waiting-cache-name"),
-            value=CONCAT(
-                FTL.TextElement('<strong>'),
-                COPY(
-                    "toolkit/chrome/global/aboutServiceWorkers.properties",
-                    "waitingCacheName"
-                ),
-                FTL.TextElement('</strong> { $name }')
-            )
-        ),
-
-        FTL.Message(
-            id=FTL.Identifier("push-end-point-waiting"),
-            value=CONCAT(
-                FTL.TextElement('<strong>'),
-                COPY(
-                    "toolkit/chrome/global/aboutServiceWorkers.properties",
-                    "pushEndpoint"
-                ),
-                FTL.TextElement('</strong> { waiting }')
-            )
-        ),
-
-        FTL.Message(
-            id=FTL.Identifier("push-end-point-result"),
-            value=CONCAT(
-                FTL.TextElement('<strong>'),
-                COPY(
-                    "toolkit/chrome/global/aboutServiceWorkers.properties",
-                    "pushEndpoint"
-                ),
-                FTL.TextElement('</strong> { $name }')
-            )
-        ),
-    ]
-)
deleted file mode 100644
--- a/python/l10n/fluent_migrations/bug_1511454_aboutPlugins.py
+++ /dev/null
@@ -1,153 +0,0 @@
-# coding=utf8
-
-# Any copyright is dedicated to the Public Domain.
-# http://creativecommons.org/publicdomain/zero/1.0/
-
-from __future__ import absolute_import
-import fluent.syntax.ast as FTL
-from fluent.migrate.helpers import transforms_from
-from fluent.migrate import COPY
-from fluent.migrate import CONCAT
-
-def migrate(ctx):
-    """Bug 1511454 - Migrate about:plugins to use Fluent for localization, part {index}."""
-
-    ctx.add_transforms(
-        "toolkit/toolkit/about/aboutPlugins.ftl",
-        "toolkit/toolkit/about/aboutPlugins.ftl",
-        transforms_from(
-"""
-title-label = { COPY("dom/chrome/plugins.properties", "title_label") }
-installed-plugins-label = { COPY("dom/chrome/plugins.properties", "installedplugins_label") }
-no-plugins-are-installed-label = { COPY("dom/chrome/plugins.properties", "nopluginsareinstalled_label") }
-
-mime-type-label = { COPY("dom/chrome/plugins.properties", "mimetype_label") }
-description-label = { COPY("dom/chrome/plugins.properties", "description_label") }
-suffixes-label = { COPY("dom/chrome/plugins.properties", "suffixes_label") }
-""")
-)
-
-    ctx.add_transforms(
-        "toolkit/toolkit/about/aboutPlugins.ftl",
-        "toolkit/toolkit/about/aboutPlugins.ftl",
-        [
-            FTL.Message(
-                id=FTL.Identifier("deprecation-description"),
-                value=CONCAT(
-                    COPY(
-                        "dom/chrome/plugins.properties",
-                        "deprecation_description"
-                    ),
-                    FTL.TextElement(' <a data-l10n-name="deprecation-link">'),
-                    COPY(
-                        "dom/chrome/plugins.properties",
-                        "deprecation_learn_more"
-                    ),
-                    FTL.TextElement('</a>')
-                )
-            ),
-
-            FTL.Message(
-                id=FTL.Identifier("file-dd"),
-                value=CONCAT(
-                    FTL.TextElement('<span data-l10n-name="file">'),
-                    COPY(
-                        "dom/chrome/plugins.properties",
-                        "file_label"
-                    ),
-                    FTL.TextElement('</span> { $pluginLibraries }'),
-                )
-            ),
-
-            FTL.Message(
-                id=FTL.Identifier("path-dd"),
-                value=CONCAT(
-                    FTL.TextElement('<span data-l10n-name="path">'),
-                    COPY(
-                        "dom/chrome/plugins.properties",
-                        "path_label"
-                    ),
-                    FTL.TextElement('</span> { $pluginFullPath }'),
-                )
-            ),
-
-            FTL.Message(
-                id=FTL.Identifier("version-dd"),
-                value=CONCAT(
-                    FTL.TextElement('<span data-l10n-name="version">'),
-                    COPY(
-                        "dom/chrome/plugins.properties",
-                        "version_label"
-                    ),
-                    FTL.TextElement('</span> { $version }'),
-                )
-            ),
-
-            FTL.Message(
-                id=FTL.Identifier("state-dd-enabled"),
-                value=CONCAT(
-                    FTL.TextElement('<span data-l10n-name="state">'),
-                    COPY(
-                        "dom/chrome/plugins.properties",
-                        "state_label"
-                    ),
-                    FTL.TextElement('</span> '),
-                    COPY(
-                        "dom/chrome/plugins.properties",
-                        "state_enabled"
-                    ),
-                )
-            ),
-
-            FTL.Message(
-                id=FTL.Identifier("state-dd-enabled-block-list-state"),
-                value=CONCAT(
-                    FTL.TextElement('<span data-l10n-name="state">'),
-                    COPY(
-                        "dom/chrome/plugins.properties",
-                        "state_label"
-                    ),
-                    FTL.TextElement('</span> '),
-                    COPY(
-                        "dom/chrome/plugins.properties",
-                        "state_enabled"
-                    ),
-                    FTL.TextElement(' ({ $blockListState })'),
-                )
-            ),
-
-            FTL.Message(
-                id=FTL.Identifier("state-dd-Disabled"),
-                value=CONCAT(
-                    FTL.TextElement('<span data-l10n-name="state">'),
-                    COPY(
-                        "dom/chrome/plugins.properties",
-                        "state_label"
-                    ),
-                    FTL.TextElement('</span> '),
-                    COPY(
-                        "dom/chrome/plugins.properties",
-                        "state_disabled"
-                    ),
-                )
-            ),
-
-            FTL.Message(
-                id=FTL.Identifier("state-dd-Disabled-block-list-state"),
-                value=CONCAT(
-                    FTL.TextElement('<span data-l10n-name="state">'),
-                    COPY(
-                        "dom/chrome/plugins.properties",
-                        "state_label"
-                    ),
-                    FTL.TextElement('</span> '),
-                    COPY(
-                        "dom/chrome/plugins.properties",
-                        "state_disabled"
-                    ),
-                    FTL.TextElement(' ({ $blockListState })'),
-                )
-            ),
-
-        ]
-    )