I used Revit 2010 to create my models and it look good in Revit. When I go to Navis and look at those doors and windows it looks like my opening in the wall do not exist. i can not see thru the wall opening and when i animate the door the wall does not show an opening exists even thought i can select the opening in the selection tree... hmmmmm
More to add..... I can go into the Selection Tree for the interior wall partition that has a window or door installed in it and i can make the opening go away by hiding those "object" under the specific wall type. Do I have to do this for ever door and window? Why can't Navis realize that openings in wall should be "not solids".
This is fixed in the "Revit Windows and Doors" hotfix for Navisworks. The fix is also included in Service Pack 1. You can find both on Autodesk.com -> Services and Support -> Autodesk Navisworks Services & Support.
Tim Wiegand Software Architect Navisworks Autodesk, Inc.