ZHA supports ConBee/RaspBee adapters natively via their deconz serial protocol interface, but do not think there is any backup or restore tools available yet via the deconz serial protocol interface so probably have to do backup and restore via deCONZ GUI. I also do not believe there is a migration path from a ConBee/RaspBee adapter to a Zigbee coordinator from other manufacturers.
https://community.home-assistant.io/t/zha-migrate-existing-network-to-new-coordinator/284636/9
https://www.youtube.com/watch?v=ql58ZfXso1M&ab_channel=EverythingSmartHome
Please consider voting for a backup feature in ZHA UI here: