Switch from USB to Ethernet ZigBee coordinator?

If you’re using Z2M and an adapter with the same chipset you can follow the guide on the Z2M FAQs.

Set via SLZB-06M web interface
Stop Z2M
Remove the Sonoff USB dongle
Change Z2M settings
Run Z2M
I later switched to ember but did the zigbee setup again with this Z2M setup

serial:
  port: tcp://1xx.1x.x.2xx:6638
  adapter: ember
  rtscts: false

embezrnet

I’ve got the 06M right now too, since you can’t change its IEEE how did you migrate?
if I just change the usb serial to the ethernet as in the stick’s config page,
Z2M complains about no matching type and doesn’t boot

Try removing in Z2M
coordinator_backup.json
Restart HA and start Z2M.

Would that not delete all the devices too?

If you remove only this, the devices will be preserved because they are in the configuration and db
If something goes wrong, you still have the HA backup and can roll back