Apple has released iTunes 12.2.1, which claims to fix the problems with iTunes Match tracks being DRMed.
– Fixes an issue for iTunes Match where iTunes incorrectly changed some songs from Matched to Apple Music.
– Provides a way to correct a library problem affecting former iTunes Match subscribers.
– Includes minor bug fixes and improvements for Beats 1.
I installed the update, and it hasn’t fixed anything for me. Here’s an example of some albums that still show as Apple Music, and still have the incorrect artwork:
Apple says, in a support document, that you may have to remove and re-download songs to get them to display correctly. This is wrong. I’m looking at my music on a Mac with no songs downloaded; all I see is my library in the cloud. And some 2,000 of 9,000 tracks show as Apple Music. (There are about 4,500 purchased tracks in my library.)