eclipse - How to make sequence diagrams independent from each other in Papyrus? -

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i'm using eclipse neon (4.6) papyrus (2.0) , created 2 sequence diagrams. i'm struggling set different properties in them. instance if change name in diagram 1 name changed in diagram 2. cannot find way set different name! have gates on both diagrams although drew them 1 diagram , cannot rid of them anymore. can removed or added in both diagrams!

after few restarts of eclipse created new sequence diagram , noticed problems don't occure anymore.


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