On my C-8, I had two devices joined using the MagicHome WiFi integration. They were:
Ryan's Desk Light Strip - device 233
Guest Bedroom TV Light - device 196
I recently deleted both from the C-8. Then, added new devices to the C-7 with the same names, and shared them through hub mesh. The C-8 somehow revived the old device entries for the new Hub Meshed devices. I discovered this because both devices have been behaving erratically and one has been constantly throwing an error in the logs for a scheduled job that shouldn't exist.
C-8
Same device on the C-7 (parent hub)