diff --git a/packages/core/client/src/collection-manager/Configuration/CollectionFields.tsx b/packages/core/client/src/collection-manager/Configuration/CollectionFields.tsx
index 4c8274c69..145c0f3d2 100644
--- a/packages/core/client/src/collection-manager/Configuration/CollectionFields.tsx
+++ b/packages/core/client/src/collection-manager/Configuration/CollectionFields.tsx
@@ -426,6 +426,7 @@ export const CollectionFields = (props) => {
             className={tableContainer}
             expandable={{
               defaultExpandAllRows: true,
+              defaultExpandedRowKeys: dataSource.map((d) => d.key),
               expandedRowClassName: () => rowStyle,
               expandedRowRender: (record) =>
                 record.inherit ? (