Showing Masses in 3D View Window in Revit

To create a context model in Revit you can import DWG (or Sketchup 5 if you are lucky) into Revit. If you import it straight in, the geometry does not work well as a massing model to render. The trick is to create a new Mass and import the DWG into the Mass. This works well. However, by default the Masses will not show in a 3d View if referenced into another Revit File. There is an obscure tickbox called Imports in Families within the visibility Graphics for the view. This needs to be ticked in addition to the Show Mass button as well as the Mass section of the visibilty Graphics.

I have found the tick box in VG and Imports in Families. I realised that because you have to import geometry into a Mass to create a decent context model this is considered to be an Import in Families. Therefore this must be ticked for the view. The template for view creation does not have this on by default whereas the 3D view does. So we are happy again.