Beginner Questions

Sorry for my dumb/nerdy question in advance…
I am a beginner here, checking out Dorico because I want to move away from Sibelius (the way AVID handles it). As I am learning, I liked the sample projects that showed up in the hub after installation. But now, that I have imported the first xml files for my previous Sibelius projects, all those nice sample projects are gone from the hub.
Is there a way to get them back and continue to learn/study with them?
Thank you! (And I’m happy to see the original Sibelius team back at it!)

I’m not sure why they vanished, but the files locations are listed here: I need a Dorico Demo Project ... - #12 by dspreadbury

Thanks! They are all there.