For the Conbee II you should see a serial/by-id device like so (this is from my Rasberry Pi 4 test device running HAOS 8.0)
I guess deCONZ changed the graphics because you are using a ttyAMA0 device, which is what you would use if you had a Raspbee II.
If the serial/by-id device not appearing anymore, there is some lower level problem (driver not loading correctly/hardware problem). Are the host (kernel dmesg) logs saying something? Also try to unplug/replug the device at runtime.