It’s showing unidentified in Roon so this seems like a metadata issue in the files themselves rather than a Roon problem.
No, it’s not a Roon problem. It’s a record label problem. The main title, artist and cd numbers are wrong - the track listings are a joke. The set is good, the box and sleeves nicely produced, but the metadata within this set is execrable, to put it mildly.
Ripping classical box sets is an exercise in futility. Decca, DG etc, please do better