diff --git a/frontend/lib/registry/components/selected-items-detail-input/SelectedItemsDetailInputConfigPanel.tsx b/frontend/lib/registry/components/selected-items-detail-input/SelectedItemsDetailInputConfigPanel.tsx
index 0a05ed0c..80fb210a 100644
--- a/frontend/lib/registry/components/selected-items-detail-input/SelectedItemsDetailInputConfigPanel.tsx
+++ b/frontend/lib/registry/components/selected-items-detail-input/SelectedItemsDetailInputConfigPanel.tsx
@@ -140,6 +140,18 @@ export const SelectedItemsDetailInputConfigPanel: React.FC<SelectedItemsDetailIn
     loadColumns();
   }, [config.targetTable]);
 
+  // 🆕 초기 렌더링 시 기존 필드들의 autoFillFromTable 컬럼 로드
+  useEffect(() => {
+    if (!localFields || localFields.length === 0) return;
+
+    localFields.forEach((field, index) => {
+      if (field.autoFillFromTable && !autoFillTableColumns[index]) {
+        console.log(`🔍 [초기화] 필드 ${index}의 기존 테이블 컬럼 로드:`, field.autoFillFromTable);
+        loadAutoFillTableColumns(field.autoFillFromTable, index);
+      }
+    });
+  }, []); // 초기 한 번만 실행
+
   // 🆕 자동 채우기 테이블 선택 시 컬럼 로드
   const loadAutoFillTableColumns = async (tableName: string, fieldIndex: number) => {
     if (!tableName) {