diff --git a/packages/designer/src/document/document-model.ts b/packages/designer/src/document/document-model.ts
index 9521fef38..7af087ea8 100644
--- a/packages/designer/src/document/document-model.ts
+++ b/packages/designer/src/document/document-model.ts
@@ -336,6 +336,9 @@ export class DocumentModel implements IDocumentModel {
       (schema) => {
         this.import(schema as IPublicTypeRootSchema, true);
         this.simulator?.rerender();
+        this.designer.editor?.eventBus.emit(EDITOR_EVENT.NODE_CHILDREN_CHANGE, {
+          node: this.rootNode,
+        });
       },
       this,
     );