@Suedkiez In addition to the easy fixes where the “composition” entry already existed in Roon and I could merge multiple instances into one…I’ve also run into numerous instances where the “composition” record did not exist…like you described in your post. Even when using Roon to add a composer to the track, the composition record did not get created.
I think I have a solution working for these. If I use a separate tag editor (I’m using Mp3tag), and add a composer to the file tag, then Roon is automatically rescanning and creating the “composition” entry for me. Once that entry is there, I can edit/merge etc to combine it with the correct “composition” entry.
Working so far…I’ll report back with additional results as I get further into this project.