Hi, thanks for your answer.

The problem is that calling
Qt Code: 
  1. setDefaultDropAction( Qt::MoveAction );
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leads to the following behaviour: I can't insert my items between two existing nodes anymore (indicator=line), all I can do is to move the item as a child (indicator=rectangle). Does that make sense ?

Moving/copying by inserting the item between two existing items was possible before.

Any idea ?