Migrating iTunes Library from Time Machine Backup with Library Stored on External Hard Drive
Finally upgraded computers and got rid of a 2012 MacBook Pro. The music transfer from my old Mac didn't transfer playlists, i.e. didn't get the iTunes Library.itl file. I still have the Time Machine backups from the old computer and trying the process again (from this thread: How To Convert Itunes Lib. To Music App L… - Apple Community) doesn't produce any results, but also no errors. The iTunes Library.itl in the Time Machine backup file points to my library on an external drive which I have plugged in while trying to transfer. The Music app picks up the correct location for the library on my external drive (as seen in Preferences->Files->Music Media folder location) but when I click on Songs or Albums in Music app it just says loading with a spinning wheel indefinitely. The external drive with the music stored also doesn't show any activity during all of this, which makes sense given the other symptoms.
Any ideas on where the process is failing?
MacBook Pro 13″, macOS 12.6