Okay, well, I'm taking the lack of responses to mean either I'm the only one experiencing this or nobody knows the answer...

So, different question then: are there any kind of "clean-up" routines I can run on a WMP file to have it automatically find and get rid of extra/duplicate vertices, invalid blocks, etc? When I export to FBX-->OBJ-->Blender, and I run the "remove duplicate vertices" script, I actually discover that I have a *lot* of them in there, though I don't see any indication of them in WED, so either WED isn't seeing them, or they are only being created through some bug in the import process. Any thoughts? Thanks...