Yes - track level metadata is what is not importing. I could edit the data myself (which is what may be necessary) but I have about 35 multi artist albums and it is time consuming. I thought by using DB poweramp that ControlPC would just accept the metadata as is but it doesn"t.
I even asked my son (who works in the computer industry) to have a look and he was very frustrated by the Sooloos software.Now I further understand why Roon happened.
That being said I would still like to use the Sooloos program so if anyone knows of a way to do this - short of manually editing each album- I would appreciate the help.

My gear: Trinnov CI, 271, 8000.1(SEs), 7200.1 HC (SE), 320s, 3200s, Seaton F18 subs, MS200 (2nd zone), 218, 210.
Other: JVC RS-4100 projector, Lumagen Pro Radiance, Panamorph DCR anamorphic lens, Stewart G4 130 screen, Kaleidescape Strato K, Rvolution 4K player and Zapitti NAS, Oppo BDP-203,Roon Nucleus