This is an issue observed throughout testing:

The issue here is that the matched tracks, which are found by listFix(), do not even remotely match, or resemble, the original track. It should be noted that this occurs too often, but not in every instance.

The main thrust of the issue, however, is that these total mismatches occur while there are numerous, almost identical, copies known to exist in the Media Directory.

Also refer to the discussion here.