Okay so heres a little brain twister I came into today. I am electrical when I went into my MEP reflected ceiling plan to try and place a lighting fixture on face it wont let me, me and our BIM Guru search through looking for ceilings and everything the ceilings are there to host but it will not let you. We found out that if you turn off the lighting fixtures in revit links from the architectural model, surprise surprise it allows you to host stuff to the face. I have never seen this before, has anyone else had this trouble before or know what the reason for it is????? your help would be greatly appreciated!