I have created a part with an external reference which I broke immediately, and used it in a subassembly. I later copied this entire subassembly into a second folder. So, I have two sets of files with the same name in different folders. I subsequently noticed some cross linking. The subassembly in folder B would open a part in folder A instead of the same part in folder B. While examining the links for the subassembly in folder B in SolidWorks Explorer, I noticed that the part with the broken external reference showed a link back to a part in folder A. I deleted the part if the external reference from the subassembly in folder B and saved it. I checked in again in SolidWorks Explorer and all cross links between folder A and B were gone. So, by question is, is there a way to eliminate from a part any "memory" at all of an external reference? Apparently it isn't enough to break it. PLEASE, no lectures on having two files with the same name. PLEASE.