Created attachment 772819 [details] Added pattern Description of problem: Appended and added workflows are not the same. Appended is always missing the first node (with label 'A'). See 'AddedPattern.png' and 'AppendedPattern.png'. Build DR6 (Beta5)
Created attachment 772820 [details] Appended pattern.
In your example the parallel split pattern is appended to a start event. In this case Designer replaces the A node (task) of the pattern with the start node which is what pattern appending does. However Designer does not update the name of the start node because it could overwrite an existing name of the start node. Since it seems that the simple naming (A,B,C...) causes more confusion that it helps I have removed the automatic naming of nodes on the patterns. This should fix these types of confusions. Fix in designer master and 6.0.x branches
Verified on ER6.