Replacing CC2531 with antenna one

Some months ago I have eliminated the Xiaomi Gateway replacing it with CC2531 and zigbee2mqtt. Considering that some sensors are at the limit of the signal range I tried to add a CC2531 with antenna configured as a router and it worked fine. Now I would like to replace both the one that acts as coordinator and the other that acts as router with respective CC2531 with antenna.
How should I proceed? Do I have to clear all sensors from zigbeemqtt and start joining from scratch again?

You can just replace the stick and won’t need to repair devices.