I am having some issues with saving as an .nwd in Navisworks Manage 2013. I have to save down so that my subcontractors can open it because they are still using 2012. When I save as a 2012 .nwd from my .nwf it takes over an hour and the file size is huge (about 138 MB). Is there a way to minimize the time it takes to save as .nwd and also minimize the file size? All of the appended appended files in the .nwf are .nwc's with the exception of two small .dwg files for fire protection.
Depending on how you assembled the NWF, you may have massive numbers of overlapping objects from multiple references to the same objects. Also, if you embed database properties and textures on publishing those values will be baked into the NWD.