The "missing" songs used to be MP3 as they were purchased through Google Play and I could play them on any music player app, including Poweramp. Once the conversion happened to POS Youtube Music it appears they are no longer available.
I purchased multiple songs using Google Play and transferred everything to YouTube Music. There is a download function on YT. I don't seem to be able to find these "downloads" like I can on songs from Amazon etc. Is PA unable to play these??