no, not with the saving/loading/dragging thing,
it has been written down somewhere, but I'll try to explain as good as possible:
drop everything you wanna duplicate on the ground and save your game.
go to your explorer and copy the "inv" files from another savegame (so you need a savegame as well from just before you dropped the items) over the "inv" files from your last save.
now reload that last save. you have all the items on the ground and in your inventory as well.
that's what I can recall from it
