This sounds like a different issue, so I’ve split off your reply into its own thread for proper attention. I’d first give both your router and core a hard reboot.
Following that, can you please head into Roon Settings>Services>Qobuz>Edit>Sync now.
If you could please fill out the needed system info as well, that would be helpful:
Roon Core Machine
Include your operating system and machine info (Model, CPU, RAM)
Networking Gear & Setup Details
Your network gear (model of routers/switches) and if on WiFi/Ethernet
Connected Audio Devices
Specify what devices you’re using and their connection types, like USB/HDMI/Chromecast, etc.)
Number of Tracks in Library
Tell us how large your music library is, eg. “30,000 tracks”
Description of Issue
Tell us about the problem you’re having in as much detail as possible. Screenshots are always appreciated!
This has happened a few times now in the past week or so where I have seen these pop back in, I’ve deleted them in Roon and sometime later they’ll show back in my library.
Going into Qobuz they do not exist in my library at all: