I have already been using the duplicate function while holding ctrl and moving polygroup. But this time i dont know why after adding new subtool which was 3d plane and after moving it, it did not duplicated even tho i have been holding ctrl while using transpose move. Do i have something enabled that disables it by accident? Or with only single polygroup within single subtool it doesnt work?
My guess is… it won’t duplicate if you have any levels on. Delete higher, delete lower and try again. There isn’t any pop-up warning, which suits me fine!
Thanks, i have simlpy duplicated subtool instead, i was in kind of a rush 
But thanks, good to know for the future.