I created simple sequence diagram in Papyrus.
It has lifeline1, lifeline2, and one async message from lifeline1 to lifeline2. When i delete message from diagram (it stays in model), and try to drag and drop that message from model to diagram it gives an error: “Element can not be dropped. For unknown reason, this link can not be dropped between sekvenca::Interaction1::Lifeline1 and sekvenca::Interaction1::Lifeline2.”
Can anybody help?