I do not understand, should upgrade keep my VM settings or not? I did upgrade and my VM section was empty? Should I restore them somehow or something went wrong?
If you upgrade to 25.04.2.X yes your vm should still be there since 25.04.2 brought back the same vm backend that 24.10 uses.
There was a bug that stops vms from showing up in the tab when the password for the spice client was empty.
25.04.2 Known Issues
- NAS-136941 - Virtual >Machines: Cannot Retrieve Response UI response on Virtualization UI.
- Impacts: VMs that were created without VNC passwords on older >TrueNAS releases where this was not required.
- Workaround: Rollback to 24.10 and apply password to display device for the VM(s) before updating.
- Impacts: VMs with a VNC port configured outside the display device port range (>=5900 =65535). This can impact VMs created prior to the port range validation implementation.
- Workaround: Rollback to 24.10 and adjust VM VNC ports to be within range 5900 - 65535 before updating.
And this should be fixed in 25.04.2.1
Haven’t logged in the gui for the last week and didn’t see the update 
Mkay, I’ll try again sometime. Mabye better luck…