hi everyone. i have a metal deck as Floor in my structural file. this floor has 'sub elements' creating the slope of the roof. i want to copy/monitor it in so i may change the metal deck to insulation and have the deck in the structual file and the insulation in the arch file. but when i copy/monitor it in, the floor comes in by drops all the sub elements.

i dont want to have to redo all the slopes of the roof. is there a way i can bring in this floor without losing all the subelements?