Change WiFi Network

I have 2 home WiFi networks, one for main use and one for my IoT devices (Amazon Echo, etc), I set up my X1 on the IoT network but now want to change it (permanently) to the main one (so that I do not have to change which network my mobile is connected to to use the Sofabaton App) but I can't see any option that allows me to do this, is there a way? I assume that reseting the hub and starting again will do this but I also assume that this will mean that I lose my setup.