ZHA replace router without messing the whole network

Configuration Zigbee
1

Hi all, I have one sonoff gateway with tasmota and some IKEA routers to expand the ZigBee network. I want to directly replace the IKEA routers with some OSRAM plugs. How can I accomplish this without pairing everything again, since some devices are connected with IKEA routers because are the nearest ones?

Best regards,
Jaime

2

generally unless they are aqara devices the end devices will search for a new parent if the current one drops. (that’s how it is supposed to work)

3

No, doesn’t seem to be like that… I switched the routers and now all the devices connected to that router are offline.