you could export all the items as one obj and re-import it at 100 percent, this may throw off the placement slightly but you should be able to rotate and move the items as one piece, you wont however be able to reposition an individual item.

Tools:- Win10, Dell XPS8900, ZBrush, Marvelous Designer 11, Hex 2, PSP8. PSP 2019 Ultimate, DAZ Studio, Affinity Photo, Affinity Designer, Filterforge 11, flowscape,  Classic UVMapper, and several headache tablets.