Nick Peck wrote:
I am in the UK: 0800 107 6285
USA is 800-275-2273
I haven't called yet - I need to brace myself!!
Good luck and look forward to feedback - I will also call them quite soon.
Stay safe!
I never did get around to calling Apple, as I fear getting through to the first level tech support people will be about as hopeless as banging by head against a cinder block; however, I did submit a bug report in Feedback Assistant over a month ago with (unsurprisingly) no reply thus far.
I also looked into Doug's AppleScripts (not sure if they were linked earlier in this thread, but they've come up in others on the same topic), and discovered the one that appears to be the cure to this frustrating issue. Doug has several scripts available, but the one that you want is Apply Embedded Artwork. This script will extract the existing embedded artwork and reapply it to the track in Music, which is what should have been done in the first place during the import process.
I have, however, encountered what may be a small bug in this script where it doesn't seem to work when selecting a single track or for the first of a group of selected tracks. I've reached out to Doug to see what's going on, and will share the results. If this is in fact a bug, hopefully he'll have an updated version out soon.
But in general, I believe the concept behind this script addresses exactly what the root cause of this issue is. Give it a try (noting the above limitation, for now...) and send a small donation Doug's way for doing the work that Apple refuses to do!