When I save fills or slabs as an object, I get a different 2D view. Object that was made from fills looks OK, however object that was made using slabs loses hidden edges effect. Is it a bug? Does somebody know how to fix it?
No. Drawindex does not work, because you can only toggle between (all!) lines visible or lines invisible (coverd by the fills). Only if you have less than 8 fills it could work, because DRAWINDEX is limitated to 8 "groups".