diff --git a/lib/shared/thread-utils.js b/lib/shared/thread-utils.js
--- a/lib/shared/thread-utils.js
+++ b/lib/shared/thread-utils.js
@@ -100,8 +100,6 @@
   LegacyThinRawThreadInfo,
   ThreadTimestamps,
 } from '../types/thread-types.js';
-import { updateTypes } from '../types/update-types-enum.js';
-import { type ClientUpdateInfo } from '../types/update-types.js';
 import type {
   UserInfos,
   AccountUserInfo,
@@ -1182,18 +1180,6 @@
   return !!_find({ name: 'Admins' })(threadInfo.roles);
 }
 
-function identifyInvalidatedThreads(
-  updateInfos: $ReadOnlyArray<ClientUpdateInfo>,
-): Set<string> {
-  const invalidated = new Set<string>();
-  for (const updateInfo of updateInfos) {
-    if (updateInfo.type === updateTypes.DELETE_THREAD) {
-      invalidated.add(updateInfo.threadID);
-    }
-  }
-  return invalidated;
-}
-
 const permissionsDisabledByBlockArray = values(
   threadPermissionsDisabledByBlock,
 );
@@ -1919,7 +1905,6 @@
   roleIsDefaultRole,
   roleIsAdminRole,
   threadHasAdminRole,
-  identifyInvalidatedThreads,
   permissionsDisabledByBlock,
   emptyItemText,
   threadNoun,
diff --git a/lib/shared/updates/utils.js b/lib/shared/updates/utils.js
new file mode 100644
--- /dev/null
+++ b/lib/shared/updates/utils.js
@@ -0,0 +1,18 @@
+// @flow
+
+import { updateTypes } from '../../types/update-types-enum.js';
+import type { ClientUpdateInfo } from '../../types/update-types.js';
+
+function identifyInvalidatedThreads(
+  updateInfos: $ReadOnlyArray<ClientUpdateInfo>,
+): Set<string> {
+  const invalidated = new Set<string>();
+  for (const updateInfo of updateInfos) {
+    if (updateInfo.type === updateTypes.DELETE_THREAD) {
+      invalidated.add(updateInfo.threadID);
+    }
+  }
+  return invalidated;
+}
+
+export { identifyInvalidatedThreads };
diff --git a/native/chat/settings/delete-thread.react.js b/native/chat/settings/delete-thread.react.js
--- a/native/chat/settings/delete-thread.react.js
+++ b/native/chat/settings/delete-thread.react.js
@@ -18,10 +18,8 @@
   containedThreadInfos,
   threadInfoSelector,
 } from 'lib/selectors/thread-selectors.js';
-import {
-  getThreadsToDeleteText,
-  identifyInvalidatedThreads,
-} from 'lib/shared/thread-utils.js';
+import { getThreadsToDeleteText } from 'lib/shared/thread-utils.js';
+import { identifyInvalidatedThreads } from 'lib/shared/updates/utils.js';
 import type { LoadingStatus } from 'lib/types/loading-types.js';
 import type {
   ResolvedThreadInfo,
diff --git a/native/chat/settings/thread-settings-leave-thread.react.js b/native/chat/settings/thread-settings-leave-thread.react.js
--- a/native/chat/settings/thread-settings-leave-thread.react.js
+++ b/native/chat/settings/thread-settings-leave-thread.react.js
@@ -15,7 +15,7 @@
   dmOperationSpecificationTypes,
 } from 'lib/shared/dm-ops/dm-op-types.js';
 import { useProcessAndSendDMOperation } from 'lib/shared/dm-ops/process-dm-ops.js';
-import { identifyInvalidatedThreads } from 'lib/shared/thread-utils.js';
+import { identifyInvalidatedThreads } from 'lib/shared/updates/utils.js';
 import type { DMLeaveThreadOperation } from 'lib/types/dm-ops';
 import type { LoadingStatus } from 'lib/types/loading-types.js';
 import type { ThreadInfo } from 'lib/types/minimally-encoded-thread-permissions-types.js';