Originally Posted by
twiceroadsfool
Its not a check box, if you are in the right place. Basically, under Settings > Phases > Graphical overides, you need to make sure Existing is set to overriden. BUT, it CANNOT have a "Material" in the box at the far right. If it does, that means its making everything existing "one material" hence you have no delineations of wall layers. Take out the material selection, and then set the lineweights/colors that you want, in the line overrides box.
Then under Phase Filters, tell "Show previous and New" to show "Existing: Overridden."
Then it should be all set.