diff --git a/src/routes/settings.import.tsx b/src/routes/settings.import.tsx
index 4f8b8e0..6f53c5b 100644
--- a/src/routes/settings.import.tsx
+++ b/src/routes/settings.import.tsx
@@ -666,6 +666,7 @@ function ImportPage() {
     caseByTitle: new Map(),
     userByName: new Map(),
     userByEmail: new Map(),
+    activeCaseIds: new Set(),
     defaultClientId: null,
     defaultContactType: null,
   }), [user?.id]);