This is supposed to carry over all tags and playlist placements, right?
I'm getting some tags replaced but others brought in from the new files, including comments and artwork. Hidden tags like MusicBrainz IDs are not carrying over from the old file and the old files turn into blank playlist entries, while the new files aren't in the playlist. (The last may be related to my lost files problem?) Actually, since the tags that appear to be correct are the major ones that the new file may have already, I don't know whether any of the old ones are being preserved.