diff --git a/packages/amis-core/src/store/crud.ts b/packages/amis-core/src/store/crud.ts
index 77c8a6f1c5a9..e6f14c4e9ca2 100644
--- a/packages/amis-core/src/store/crud.ts
+++ b/packages/amis-core/src/store/crud.ts
@@ -102,8 +102,8 @@ export const CRUDStore = ServiceStore.named('CRUDStore')
       return extendObject(self.data, {
         ...self.query,
         ...self.data,
-        selectedItems: self.selectedItems,
-        unSelectedItems: self.unSelectedItems
+        selectedItems: self.selectedItems.concat(),
+        unSelectedItems: self.unSelectedItems.concat()
       });
     },