diff --git a/lib/ContentModule.js b/lib/ContentModule.js
index 9181825..d4052de 100644
--- a/lib/ContentModule.js
+++ b/lib/ContentModule.js
@@ -248,7 +248,10 @@ class ContentModule extends AbstractApiModule {
       await this.clone(userId, config._id, undefined, { _courseId: newData._id.toString() })
     }
     const children = await this.find({ _parentId: _id })
-    await Promise.all(children.map(({ _id }) => this.clone(userId, _id, newData._id)))
+    for (let i = 0; i < children.length; i++) {
+      await this.clone(userId, children[i]._id, newData._id);
+    }
+
     return newData
   }