Ok so I have 4 hubs in service a C-4, a C-5, a C-7 and a SmartThings V2 hub all connected via hubconnect the C-4 is the server hub. So the C-4 is having major issues and I believe on its last legs, so I purchased another C-7 hub. Can I just go in and replace the IP address and the connection keys on the remote hubs with the new C-7 and it work without having to reconnect all the hubs from scratch? As always all help is greatly appreciated.
About 3 months ago I did something similar with a pair of Development Hubs. I had a C-5 that I wanted to swap with a C-7. I took a backup of the C-5 and Restored it to the C-7 and adjusted the IP address of the C-7 to be what the C-5 was using 2 mins before. When the C-7 booted up, it was exactly the functionality of the C-5.
I then 'factory reset' the C-5 and used it for a different experiment.
The important element was, the original C-5 had zero Z-devices. This made MY swap very very easy and yes, the paired hub connected right away, unaware of the swap.
The method you detail is ok however. 
Ok great thx for the info. I probably should have mentioned when I started no physical devices were connected to the C-4 it was just being used for the coordinator hub, and for routines only.
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