Importing albums with double volumes into rock-disappearing volume two

I’ve successfully installed ROCK on an Intel Nuc 10.
I have a trial subscription of Roon and imported my modest library( 800 or so albums).
Pretty smooth sailing after figuring out Roon’s interface areas that are not obvious to a new user.
Glorious music plays, really happy with the sound quality and the wealth of information on the music and its producers. But… For the life of me I cannot figure out why double albums, which appear in my library folder as Cd1 and Cd2 do not show up properly. Only Cd1 appears. Double volume CD’s or Sacd’s only show up as one entry.
Can anyone enlighten me on how to fix this issue?