Only if you go to edit/Copy picture or Edit/Copy for "rendered in new window" images. In fact Z-Buffer like render can also be achieved with Mask display mode : Depth Cueing On, Black Foreground and White Background. And Alpha for figure transparency can be done with the same settings and Depth Cueing Off. Just have to render three images ( ZBuffer and Mask with just Antialias Document ) and paste them... Well, finally it's easier this way :) ( lol )