Sorry if I sound a bit rash, but getting to a point that I want to tear my hair out...
In the attached drawing, I did a model to sheet, undid that and ended up with the huge doors, why???????
That is after I tried moving a a sublayer to up in the hierarchy which isn't possible, did a "flatten layers", hoping that would sort me, which it didn't, but could not undo this action.....
Also after modelling the first cupboard, which every time I tried moving it gave me all sorts of artefacts; so I made a copy of it and used that, but all the layer information got lost, all parts where now on the layer I copied it to.
I'm sorry, but I have to say after a year and a half of using ViaCAD, all I can say it is very beta quality software, which cost me quite a bit.
Using latest update of viacad pro btw.

Regards, Peter