Multiple Disc Sets Showing As Single Disc Set With Duplicating Numbers

Whether my multiple disc set is a purchased download file or whether it is from a CD set that I rip I am having problems with how the layout reads in Roon.

My process is to download my purchase or RIP my CD and then import them into iTunes (Music). If needed I then edit the file tags so they will basically read…

Disc 1

Track 1
Track 2 etc.

Disc 2

Track 1
Track 2 etc.

Roon is pointed to the exact same Music Folder source as is iTunes (Music). But in Roon on several occasions I am seeing the multiple Disc failed to be recognized and the tracks will be listed as…

Track 1
Track 1
Track 2
Track 2
Track 3 etc. without any identification as to which Disc they are from

I have looked carefully at my metadata tags but I am unable to see a difference between the multiple disc sets that read correctly in Roon versus those that read incorrectly in Roon and all of them read correctly in iTunes (Music).

I also just checked my Music Library in the Sonos app which is also pointed at the same folder. I rarely used this for playback control. It does show the same album as a multiple disc set.

I check one multiple disc set that does show the 4 discs involved and the track reading for them looks like…

1-1 track
1-2 track

2-1 track
2-2 track

3-1 track etc. but the metadata on this example is exactly the same as the metadata for the multiple disc that do not read properly

Any ideas or help are appreciated.