diff --git a/python/l10n/fluent_migrations/bug_1814261_mixed_content_identity_panel.py b/python/l10n/fluent_migrations/bug_1814261_mixed_content_identity_panel.py
new file mode 100644
index 000000000000..a135870df8cd
--- /dev/null
+++ b/python/l10n/fluent_migrations/bug_1814261_mixed_content_identity_panel.py
@@ -0,0 +1,49 @@
+# Any copyright is dedicated to the Public Domain.
+# http://creativecommons.org/publicdomain/zero/1.0/
+
+import fluent.syntax.ast as FTL
+
+from fluent.migrate.transforms import TransformPattern
+
+
+class STRIP_LEARNMORE(TransformPattern):
+    # Used to remove `<a data-l10n-name="link">SOME TEXT</a>` from a string
+    def visit_TextElement(self, node):
+        link_start = node.value.find('<label data-l10n-name="link">')
+        if link_start != -1:
+            # Replace string up to the link, remove remaining spaces afterwards.
+            # Removing an extra character directly is not safe, as it could be
+            # punctuation.
+            node.value = node.value[:link_start].rstrip()
+
+        return node
+
+
+def migrate(ctx):
+    """Bug 1814261 - Use moz-support-link in the mixed-content section of the identity panel, part {index}."""
+
+    browser_ftl = "browser/browser/browser.ftl"
+    ctx.add_transforms(
+        browser_ftl,
+        browser_ftl,
+        [
+            FTL.Message(
+                id=FTL.Identifier("identity-description-active-blocked2"),
+                value=STRIP_LEARNMORE(
+                    browser_ftl, "identity-description-active-blocked"
+                ),
+            ),
+            FTL.Message(
+                id=FTL.Identifier("identity-description-passive-loaded-insecure2"),
+                value=STRIP_LEARNMORE(
+                    browser_ftl, "identity-description-passive-loaded-insecure"
+                ),
+            ),
+            FTL.Message(
+                id=FTL.Identifier("identity-description-passive-loaded-mixed2"),
+                value=STRIP_LEARNMORE(
+                    browser_ftl, "identity-description-passive-loaded-mixed"
+                ),
+            ),
+        ],
+    )