diff --git a/.changeset/gold-knives-sparkle.md b/.changeset/gold-knives-sparkle.md
new file mode 100644
index 000000000000..144573944d49
--- /dev/null
+++ b/.changeset/gold-knives-sparkle.md
@@ -0,0 +1,5 @@
+---
+'@rocket.chat/meteor': patch
+---
+
+Fixes an issue where ignore threads parameter were not being affected by retention policy overriding in old channels
diff --git a/apps/meteor/server/startup/migrations/index.ts b/apps/meteor/server/startup/migrations/index.ts
index e7a18e836722..e7efdc89ebde 100644
--- a/apps/meteor/server/startup/migrations/index.ts
+++ b/apps/meteor/server/startup/migrations/index.ts
@@ -38,5 +38,6 @@ import './v301';
 import './v303';
 import './v304';
 import './v305';
+import './v306';
 
 export * from './xrun';
diff --git a/apps/meteor/server/startup/migrations/v306.ts b/apps/meteor/server/startup/migrations/v306.ts
new file mode 100644
index 000000000000..fcd6ae9e3558
--- /dev/null
+++ b/apps/meteor/server/startup/migrations/v306.ts
@@ -0,0 +1,22 @@
+import { Rooms } from '@rocket.chat/models';
+
+import { addMigration } from '../../lib/migrations';
+
+addMigration({
+	version: 306,
+	name: 'Adds missing ignoreThreads parameter for old rooms with retention policy overridden',
+	async up() {
+		await Rooms.updateMany(
+			{
+				'retention.enabled': true,
+				'retention.overrideGlobal': true,
+				'retention.ignoreThreads': { $exists: false },
+			},
+			{
+				$set: {
+					'retention.ignoreThreads': false,
+				},
+			},
+		);
+	},
+});