As Marla suggested, ZIPping up sample files that reproduce your issue would be helpful. We would need the background file(s) as well as the host file with the background file(s) externally referenced. The doors should be tagged and the host file should have an instance of the Schedule Table Style you use for your door schedule inserted. Unless your actual project files are rather small, it would be best to create files with just a few spaces, walls and doors, but set them up just like your project files and verify that the problem still remains.
Are you using Project Navigator? If so, it would be best if you can create a new project, and create the minimum number of Elements, Constructs, Views and Sheets to mimic your work flow and demonstrate the problem while keeping the total file size low. ZIP up the entire project, including the APJ and DST files.
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David Koch
Autodesk Discussion Group Facilitator
Using ADT 2004 at work; access to 2005, 2006, 2007 & 2008 at home