Here is a little BUG we have found in Revits Structure 2010 exported dwg files after SP3 has been installed.
Before Service Pack 3 was installed into Revit, when we exported or saved as a dwg file the arrows on the dimensions were set up the same in the dwg as the Revit model i.e. closed filled arrows.
Below is another dwg from the same model After Service Pack 3 was installed and the closed filled arrows translate as architectural ticks even though when inspected they think they are closed arrows!
And you can't seem to make them turn into closed arrows.
This has been checked out by our reseller and passed up to Autodesk who we are told have replicated the problem (March 2010).