AFAIK...HQ and Roon are still finalising the options for Roon reading directly the Sooloos store info. I think recent
HQ messages touched on this.
So, for now, a native export is the tested way to go.
Hold on a while and the Sooloos store reading option may surface.
This will be a neat option for those that simply want to add the Roon control but leave the rest of Sooloos intact (initial rip/import, MD600, TwinStores, etc).
I am sure either BobS or Danny will be able to confirm this at some point very soon.