Hi Colog,
With “existing zigbee router” you mean a zigbee controller (like z2m and such) and all paired zigbee devices?
If true, to my knowledge, there’s no migration / import possible, or any related tool avaliable for Homey Pro models.
However, because you run Homey Self hosted server: this doesn’t have it’s own zigbee controller, so it’s a matter of connecting the dots.
In case you do have z2m running:
you can add it’s zigbee devices to Homey by using the zigbee2mqtt community app, or by using Home Assistant community app (in case you use z2m as H.A. app (app formerly known as add-on)).
