How did you export the file? I assume in the folder you are importing "file 1.m2v" that you have something like "file 1.xmpses" etc.
It's exported by AME. Yes there is file1.xmpses but not file 2. Is that the problem?
The "extra" files are what provide certain information about the file. The information should be the same.
I don't think it has anything to do with the cache, although clearing it would not hurt.