I once read a composer complaining that iTunes has deleted his master records and "helpfully" replaced them with compressed files (lossy compression of course).

I once read a composer complaining that iTunes has deleted his master records and "helpfully" replaced them with compressed files (lossy compression of course). I tried to find it to prove your point, but found this instead: https://discussions.apple.com/thread/250315803 https://discussions.apple.com/thread/250315803 Software that loses data it fetched or produced is an accident. Software that actively search for and deletes data it has nothing to do with (in backups!!), is malware. People went to jail over such things.