Linked DWG in Mechanical and Electrical Views no Longer Halftone in 2010

In prior releases of Revit, linked  DWG files were displayed as halftone in Mechanical and Electrical views.  In 2010, this is no longer the case.  If you WANT the linked .dwg to be halftone:

1. Edit the Visibility/Graphics overrides for the view
2. Click the Imported Categories tab
3. Check the Halftone box for the particular DWG.

This recently came up in the Revit MEP discussions forum:  http://discussion.autodesk.com/forums/thread.jspa?threadID=728971&tstart=0