I create a workflow using the Activiti Modeler KIS BPM. The flow has a start event going to a script task with a script that sets a variable, then goes to an exclusive gateway with 2 conditional sequence flows going to a end event.
I export the xml. Then import it and edit it. The conditional flow attributes are all changed to standard flows.
I've also seen problems with error end events inside a subprocess being changed to a standard end event.
Attached is the xml contents that I exported from the KIS BPM modeler. Tried searching for similar issue in the forums but could not find anything.