DragAndDrop Problems, Returns wrong GameObject!

I have spent a couple of hours scouring the web for things on unity's inbuilt DragAndDrop class and there inst much to go on.

Essentially what i want to do is have my own custom hierarchy that is generated from all the children of a given prefab within my item editor that i am currently building. What i want to happen is when i drag one of the members of the hierarchy, it will take a reference of the transforms game object that it represents and allow it to be linked to any unity editor based object field of the same type.

The code is as follows for the hierarchy block: void DrawRecursiveHirearchy(Transform parent, bool indent) { if (indent) { EditorGUI.indentLevel++; }

         foreach (Transform child in parent)
         {
             EditorGUILayout.LabelField(child.name);
 
             if (Event.current.type == EventType.MouseDown && GUILayoutUtility.GetLastRect().Contains(Event.current.mousePosition))
             {
                 DragAndDrop.PrepareStartDrag();
 
                 DragAndDrop.StartDrag("GameObject");
 
                 DragAndDrop.visualMode = DragAndDropVisualMode.Link;
 
                 GameObject selected = child.gameObject;
 
                 Debug.Log(selected.name);
 
                 DragAndDrop.SetGenericData("GameObject", selected);
 
                 Selection.objects = new GameObject[] { selected };
             }
 
             DrawRecursiveHirearchy(child, true);
         }
 
         if(indent)
         {
             EditorGUI.indentLevel--;
         }
 
     }

And the video demonstrating the hirearchy is Here:

The video demonstrates that the hierarchy does in fact link to the correct game objects as it shows them in the inspector on the right hand side and it passes out the transform name correctly in the log section also. But whenever i drag this reference to the target area it somehow returns the default prefab which isnt even iterated over.

Is there something im doing wrong with the DragAndDrop class?