I tried to find it in albums by album name and by browsing through the “Various Artists” artist. Nothing. Checked the files to ensure they’re not corrupt. They’re not. Updated the date and timestamp of all files in the album to today and it showed up in Overview (I’ve set Roon to regard file date and timestamp as import date).
Still doesn’t appear in search though and now I know why — Roon’s recognised it and given it a completely different name.
I’ve changed the tagging on my side to use that which Roon adopted. We were using different components of a long album name.
I had it tagged: Hillbillies In Hell: The Rapture
I’ve now tagged it: Hillbillies In Hell: Country Music’s Tormented Testament (1952 - 1974) - The Rapture
Roon tagged it: