But when converting from my old C7 to my new C8, I shutdown the old C7 after I did the cloud backup. Unplugged and everything removed. Setup C8 and restored everything flawlessly. But how do I get rid of the C7 from my devices and factory reset it? I couldn't see anything when I looked some earlier in the settings menu on the C7.
Also, be sure to change the Zigbee channel number, to avoid conflicting with the C8 hub. The C8 hub cloned the C7's Zigbee radio ID, and it is important that both hubs are not on the same Zigbee channel.
Also, if you plan on no longer using the C7, and might consider selling it... Please unregister the C7 hub from the Hubitat Cloud server. Otherwise, the person you sell the hub to will be asking you to do so later on.