I created a file structure for parts and assemblies on my portable hard drive. When I had everything in place and working well, I transferred the entire "file structure" to the company network hard drive. Everything seemed to go well. All parts, including toolbox parts, were found by the assemblies. However, In @75% of the "mates" one, or more, of the selected mate surfaces are missing. I can go in and re-select the surfaces on the obvious ones, but the larger assemblies are unusable! Are there any thoughts on this??? I can't afford this much time correcting all these mates.