Created attachment 803875 [details] Process If you have a process with lanes and artifacts inside, when moving the lane even by one pixel will destroy all the connections. To reproduce open attached process and move CFO lane. The arrows position will be recalculated.
the sequence flows are not removed but re-alligned. they are still existing as they did before. the reallign can in some scenarios make them overlap which is fine as you can always use their edge points to move them to some sort of other positions you'd like. this is not an issue imo.
Based on the latest comment no work has been done on this issues there for the result should be CLOSED - WONT FIX or NOT A BUG. In my opinion if the whole process is selected using Ctrl+a and moved then the lanes should be left as they are. No re-aligning should be performed. Even Ctrl+z cannot be used to get back the original state. Lowering severity as this does not break anything and may be considered only cosmetic.
Tested in bpmsuite-6.2.0.GA and the behaviour has been fixed as a result of recent work on swimlanes.
Connectors are preserved after moving lanes. Verified on 6.3.0.DR1 But please keep in mind, that there is still this behavior: https://bugzilla.redhat.com/show_bug.cgi?id=1012886