Hi @berrakbalci
Yes, I remember.
I tried to simplify the geometry using the bake feature. So the feature created after the baked process should be managed carefully. Since at least they share between two sides. It was very exhausting since the geometry was complex but after some hours I got the result. The root of the problem was the AutoCad simplifications of different stories and levels. Air walls and boundaries sharing different elevations are challenging, the nodes and the convexity of the zone should remain.
Sincerely,
Behnam