iTunes loses a small selection of my music library on every upgrade

iTunes loses a small selection of my music library on every upgrade Each time I upgrade iTunes a small selection of songs go missing. i.e. they are not found by iTunes and the file itself is no longer in the folder on the hard-disk.
Asked by: Guest \| Views: 226

Total answers/comments: 1

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Guest [Entry]

"All my missing songs seemed to go to a folder called ""Unknown Artist"".
I simply imported that folder into Itunes and removed the unfound duplicates which had the exclamation mark in front of them."