So I took some project IDs from Sprout and put them into my Upstream, and they don’t seem to be found. I’m connected to Sprout, shouldn’t it be able to find them?
Replication isn’t working at the moment, but we’re actively working on it. You can follow the progress on Discord in the 
p2p channel.
Is that channel not mirrored on Matrix?
I’ve created a page that collects all the issues and problems and where you can follow up on the progress of the investigation. We’re also in the process of adding issues for this to our repo.