in some files, when I grab all windows and edit the marker or any other setting, it unifies the library part applied to those windows or doors. When this happens, it doesn't seem to matter what I am editing or how I am editing it. If I select all, change the marker, element ID, classification, etc. it changes them to the same library part. In this case, the last used part, W2 Casement. It doesn't matter if I'm in plan or 3d, or if I go through the info box or the element settings; it messes it up.
I'm not sure how to avoid this glitch/bug, its so inconsistent. It works in some files sometimes, and not others.
Before changing marker type:
After changing marker type:
Operating system used: Mac Apple Silicon
BIM solutions and trouble shooting (self proclaimed) expert. Using Archicad 26 5002 US on Mac OS 11.5.2