By a mistake a have moved ceiling timbers to a wall in MOS (I think working in MOS is very dangerous?). I was trying to copy the timbers in the one ceiling to another ceiling - but wat actually happened is that the ceiling timbers is now attached to walls. When I in MOS try to move the ceiling timbers from the wall back to the ceiling it doesn't work - but moves to another wall, that I have not checked in MOS. Why??
Maybe I am doing something wrong - exactly what boxes should be checked, unchecked and grey in MOS in order to move the timbers to the ceiling??