Hi Florian,
I will try to capture it next time. To explain it in bit more details :
I had 3 stage pipe line network built, and I wanted to add dwg as a reference to elevations. During the assigning stages through Reference Element editor everything was fine, but later some of references started not to come up as I mentioned earlier.
This is all I got now, hope it helps to at least describe possible issue.
Best Regards,
Saruul