Not sure of the answer to the id3 tag information. I came across same problem. Strange it happens for some & not others. My "guess" was the type of id3 tag that LW was unable to change. Perhaps the version of tag. It might also be iTunes tag info that LW is no longer able to change. I don't think the tag issue is a new one. I think i saw it before but might be wrong.

If anybody else out there has ideas about a solution, I'd be happy to hear it too.