Hi. I am not able to edit single wall height of a room. Used to be able to do it in Chief X10 but for some reason the Red edit handle and the edge handles are not showing like here ( Changing Wall and Ceiling Heights (chiefarchitect.com) ) but instead seeing a circular grey handle but its editing globally...ie the all walls in the room. Used to be able to do this before but don't know what i have done to trigger this action.