diff --git a/native/redux/persist.js b/native/redux/persist.js
--- a/native/redux/persist.js
+++ b/native/redux/persist.js
@@ -16,6 +16,11 @@
   convertConnectionInfoToNewIDSchema,
 } from 'lib/_generated/migration-utils.js';
 import { extractKeyserverIDFromID } from 'lib/keyserver-conn/keyserver-call-utils.js';
+import {
+  type ClientDBIntegrityStoreOperation,
+  integrityStoreOpsHandlers,
+  type ReplaceIntegrityThreadHashesOperation,
+} from 'lib/ops/integrity-store-ops.js';
 import {
   type ClientDBKeyserverStoreOperation,
   keyserverStoreOpsHandlers,
@@ -1125,6 +1130,30 @@
     }
     return newState;
   },
+  [64]: async (state: AppState) => {
+    const replaceOp: ReplaceIntegrityThreadHashesOperation = {
+      type: 'replace_integrity_thread_hashes',
+      payload: {
+        threadHashes: state.integrityStore.threadHashes,
+      },
+    };
+
+    const dbOperations: $ReadOnlyArray<ClientDBIntegrityStoreOperation> =
+      integrityStoreOpsHandlers.convertOpsToClientDBOps([
+        { type: 'remove_all_integrity_thread_hashes' },
+        replaceOp,
+      ]);
+
+    try {
+      await commCoreModule.processIntegrityStoreOperations(dbOperations);
+    } catch (exception) {
+      if (isTaskCancelledError(exception)) {
+        return state;
+      }
+      return handleReduxMigrationFailure(state);
+    }
+    return state;
+  },
 };
 
 // After migration 31, we'll no longer want to persist `messageStore.messages`
@@ -1192,7 +1221,7 @@
   storage: AsyncStorage,
   blacklist: persistBlacklist,
   debug: __DEV__,
-  version: 63,
+  version: 64,
   transforms: [
     messageStoreMessagesBlocklistTransform,
     reportStoreTransform,
diff --git a/web/redux/persist.js b/web/redux/persist.js
--- a/web/redux/persist.js
+++ b/web/redux/persist.js
@@ -5,6 +5,11 @@
 import storage from 'redux-persist/es/storage/index.js';
 import type { PersistConfig } from 'redux-persist/src/types.js';
 
+import {
+  type ClientDBIntegrityStoreOperation,
+  integrityStoreOpsHandlers,
+  type ReplaceIntegrityThreadHashesOperation,
+} from 'lib/ops/integrity-store-ops.js';
 import {
   type ClientDBKeyserverStoreOperation,
   keyserverStoreOpsHandlers,
@@ -262,6 +267,37 @@
       return handleReduxMigrationFailure(state);
     }
   },
+  [12]: async (state: AppState) => {
+    const databaseModule = await getDatabaseModule();
+    const isDatabaseSupported = await databaseModule.isDatabaseSupported();
+    if (!isDatabaseSupported) {
+      return state;
+    }
+
+    const replaceOp: ReplaceIntegrityThreadHashesOperation = {
+      type: 'replace_integrity_thread_hashes',
+      payload: {
+        threadHashes: state.integrityStore.threadHashes,
+      },
+    };
+
+    const integrityStoreOperations: $ReadOnlyArray<ClientDBIntegrityStoreOperation> =
+      integrityStoreOpsHandlers.convertOpsToClientDBOps([
+        { type: 'remove_all_integrity_thread_hashes' },
+        replaceOp,
+      ]);
+
+    try {
+      await databaseModule.schedule({
+        type: workerRequestMessageTypes.PROCESS_STORE_OPERATIONS,
+        storeOperations: { integrityStoreOperations },
+      });
+      return state;
+    } catch (e) {
+      console.log(e);
+      return handleReduxMigrationFailure(state);
+    }
+  },
 };
 
 const migrateStorageToSQLite: StorageMigrationFunction = async debug => {
@@ -307,7 +343,7 @@
     { debug: isDev },
     migrateStorageToSQLite,
   ): any),
-  version: 11,
+  version: 12,
   transforms: [keyserverStoreTransform],
 };