That line happens when you have two of the same object occupying the same space. If I am correct then moving one of the CWs should fix it.
On the other point you don't need 2 CWs to have different rows. The Contrabim video shows how to do it.
No, it has nothing to do with object occupying the same space. It`s a problem of the
Floor Plan Cut Plane
cutting an empty space. If I change the high of the Cut Plane, the other CW is affected. It seems ArchiCAD`s CW isn`t able to be shown as projected top view.
I know I don`t need 2 CWs, but I want it. Please read my last post about the reasons. In fact, I need 2 CWs If need something for real production and quantities, not just a presentation.
AC26 > AC5 - Win10