The config of the IP8 is stored in the slot on your surface ore mix rack.
There are 16 slots on each mix rack or surface.
These slots (And there config’s) are stored in scene’s (and the scene’s are stored in the show file).
You can simply disconnect the IP8 (In software) from a specific config slot and reconnect it to a different one (On the same or other device).
Make sure you disconnect an IP8 from a slot first, instead of trying to force it to connect, as this on boot up of the system would result in random connections (Whoever is first).
You can even change the config of an IP8 by changing a scene!
There is no need to reset the IP8 as the ip8 is reset everytimes its powered up (And then retrieves the config from the slot its connected to.