Just had a strange problem with the year tag in virtually all my albums. It used to be fine – showed up in all without a problem. Went into MC a couple of days ago and noticed that all but a couple of alums were listed ‘Unknown Year’ and the year tag was empty. Tried running a library update – no change. Checked my backups and there had been no changes to the files themselves…
Perhaps the Date library field got corrupted for some reason. Maybe a system crash occurred at a very unfortunate moment or something like that happened. Though, usually the library survives just fine from a crash, perhaps missing only some very recent edits.
Did you actually try the "Update library from tags" Library Tool? It should be able the read whatever info you have in the file tags.
I cannot get MC to import files in my "Classical" sub-folder. Pop, Rock, Jazz are all fine.
BUT if rename the "Classical" subfolder to something else ("Classical2" "Classical3"...whatever), it successfully imports my files!...
Do you have the "Ignore files previously removed from library" auto-import option checked? Each listed folder has this option. (Select a listed folder and click "Edit..." to access the folder settings from the "Configure auto-import" window.)
You can remove the old library files files completely by creating a smartlist that lists the normally hidden "deleted files" and deleting the files once again from that list. Take care that you select the option to remove the files only from the library if you intend to keep the disk files. The smartlist rule is
~d=r ( =
Modify Results: Limit database to: Removed in the smartlist wizard.)