Autodesk Architectural Desktop 2006 adds several tabs to the standard AutoCAD 2006 Options dialog box. We are still looking at these options beginning with the AEC Editor Tab. It is located all the way to the right
The Export to AutoCAD section lets you how you want XREF to react when you are sending your file out to AutoCAD. Make sure you use this function now that it is available. You no longer want to try to Save As to get your file out to others.