I created a Cove Family to apply to the Exterior walls of my building as a sweep. As soon as I did, my walls turned a gray color and it became obvious that the windows and curtain wall were not translucent as they had been before. The doors also show the wall sweeps running through them when they hadn't before. I thought that I had done something to the wall itself and removed the sweep, but the wall remained the same. I then changed the wall to another one that hadn't been affected in my project, but the exterior walls remain the same! It even affects the sections that are used on those walls, it looks as if there is some kind of filled region that now covers the elements. I'm not sure if applying the wall sweep affected the wall or if there is some kind of issue with the Revit program. I am including 2 images one a 3D image with the unaffected walls in the background (they are red brick) and one with the section to show the wall and how the window looks, both are shown in Shaded visual style.
