Is there a way to change a regular exterior wall to a Pony wall or do I have to delete it and replace it with a pony wall and the add all the electrical, windows, doors, etc back in again? I have Home Designer Architectural X11 / 2020. I have a complete plan drawn up but decided that I want to make the exterior wall half brick and half siding! When i click on exterior wall there is no option to chaange it to a pony wall that I can see.