Parse the selected iTunes tracks' Song Names such that the same first Item text in "First Item - Second Item - Third Item" is removed and copied to another user-selected tag in each selected track (Album, Artist, Composer, Genre, Grouping, or Comments), leaving "Second Item - Third Item" in the Song Name. Run the script again to similarly remove and copy "Second Item" to another tag, and so on. Read Me explains more, and how to customize for different separator characters. Screenshot speaks volumes.
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Display, create text file listing info of dead tracks
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Restore each selected track's artwork from an image file stored in its Album folder
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Exports and then re-imports selected tracks' artwork
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Perform search-and-replace on text in your choice of tags