diff --git a/lib/types/thread-permission-types.js b/lib/types/thread-permission-types.js
--- a/lib/types/thread-permission-types.js
+++ b/lib/types/thread-permission-types.js
@@ -382,11 +382,6 @@
     threadPermissionFilterPrefixes.OPEN +
     threadPermissions.KNOW_OF,
 
-  // descendant_open_voiced
-  threadPermissionPropagationPrefixes.DESCENDANT +
-    threadPermissionFilterPrefixes.OPEN +
-    threadPermissions.VOICED,
-
   // visible | descendant_open_visible
   threadPermissions.VISIBLE,
   threadPermissionPropagationPrefixes.DESCENDANT +
diff --git a/lib/utils/migration-utils.js b/lib/utils/migration-utils.js
--- a/lib/utils/migration-utils.js
+++ b/lib/utils/migration-utils.js
@@ -18,6 +18,11 @@
   DraftStore,
 } from '../types/draft-types';
 import type { RawMessageInfo } from '../types/message-types.js';
+import {
+  threadPermissions,
+  threadPermissionPropagationPrefixes,
+  threadPermissionFilterPrefixes,
+} from '../types/thread-permission-types.js';
 import type { ThreadStoreThreadInfos } from '../types/thread-types.js';
 
 function convertDraftKeyToNewIDSchema(key: string): string {
@@ -116,6 +121,17 @@
   return messageInfos;
 }
 
+// This is an array of all permissions that need to be removed
+// in an upcoming migration for roles. Once the migrations are landed,
+// no changes to this array should be made to prevent future migrations
+// from having unexpected behavior.
+// See context in https://linear.app/comm/issue/ENG-5622/#comment-2d98a2cd
+const permissionsToRemoveInMigration: $ReadOnlyArray<string> = [
+  threadPermissionPropagationPrefixes.DESCENDANT +
+    threadPermissionFilterPrefixes.OPEN +
+    threadPermissions.VOICED,
+];
+
 export {
   convertDraftKeyToNewIDSchema,
   convertDraftStoreToNewIDSchema,
@@ -125,4 +141,5 @@
   convertNonPendingIDToNewSchema,
   convertIDToNewSchema,
   convertNotificationMessageInfoToNewIDSchema,
+  permissionsToRemoveInMigration,
 };