Description of problem:
Swimlanes are disordered after a process with two swimlanes is reopened in designer.

Version-Release number of selected component (if applicable):

How reproducible:
When I close an editor with a process with two swimlanes and then I reopen this process, the swimlanes are disordered, usually the inner swimlane is under the bigger, outer swimlane. I have enclosed two pictures too (before and after a reopening of the editor).

Expected results:

Swimlanes should be ordered.