Since some weeks ago one of our partners gets some objects with different (wrong) Building Story assignments in the IFC with each IFC2x3 export in AC25 while it worked fine before. The object will be assigned to the building story above it: Example some walls of the first floor are exported with their building Story set to the ground floor. Everything seems like it is set the correct way in Archicad and they didn´t change anything in the IFC Export settings between the exports. They are using the Teamwork function. I can´t think of a reason why that is happening but maybe one of you encounter similar problems?