I have a similar problem, sometimes when I add a new album to the local library, it happens that the tracks are not from 1 to 10 but scattered 3,5,2,1,7,4 …
Can you write instructions on how to change this in the metadata?
I’m normally do my tagging with JRiver, since it’s way more advanced compared to Audirvana.
But if you select a file in your library and click on Edit metadata. You can set the track numbers and disc numbers for each track as in the example above. So in this case it’s track 6 out of 8, and disc 1 out of 1.