Hello
Yes I know, process ID. But still, this would be a good feature, because the people at our company that actually create models are looking for a smooth modelling experience. I am talking about non-IT people. Not having to look for saved BPMN files would be quiet comfy 
Thank you
just as context: (i have had this come up with my own clients): In many cases the Call Activity link to another process is a expression that is eval at runtime. Point being its not just a “make it link based on file name”.
I’m pretty sure this feature could be on the roadmap for Cawemo, i’ll have to check and let you know. If it’ll happen and if there’s any kind of eta.