I am in this situation:

I have several BPMN 2.0 xml files that describe different processes but contain elements that refer to the very same “real” element.

Now I’d like Sparx to merge them in the db after importing so that e.g. the role “cashier” is not doubled.

Is that possible apart from doing it manually?
Or should I use another tool? – Or should I use another language, e.g. Plant UMl, …?

Your opinions very appreciated.

I know importing works fine and autolayout etc.
I do not want to merge xmls. As they are different diagrams and it can actually be numerous xmls that appear at different moments in time.