I have a node (A) connected to another node (B) with an edge, and node A has another node inside it (AA). I want to re drag the edge coming from A to B so that the connection is from AA to B. However if I select the handle on A and drag it on top of AA, AA does not focus and so I cannot drop the connection there. As a bad workaround I must reconnect A to an arbitrary node and then I am allowed drag the handle onto AA. It seems AA being inside A prevents me from dragging the handle from A to AA.