I am trying to create some objects from some 3d files that I downloaded. Typically when I do this I can open the object created and then change the 2D Symbol to what I want to see in plan. This has always worked perfectly, but now when I try to do it, the object does not update. Instead, it always shows me the 2D View (I'm not sure what the difference of these is supposed to be), which I cannot modify at all. Is there a way to fix this?