Is it possible to migrate a Zigbee2MQTT Zigbee network without re-pairing from SONOFF Zigbee 3.0 USB Dongle Plus (zstack) to Nabu Casa ZBT-2 (ember)?

[michaelmell]

I would like to migrate my Zigbee network from SONOFF Zigbee 3.0 USB Dongle Plus (ZBDongle-P with chipset: TI CC2652P + CP2102(N)) to a Nabu Casa ZBT-2 that I recently bought.

I want to migrate my Zigbee network without re-pairing, because it has 85 devices and would require much effort.

I tried following these instructions to migrate: https://www.zigbee2mqtt.io/guide/faq/#how-do-i-migrate-from-one-adapter-to-another

I know these are different stack (zstack vs. ember), but found the following statement here that it might work:

When switching from zstack -> ember or ember -> zstack re-pairing might not be required, however results might vary as this is not officially supported.

However, I get this error after switching my Z2M configuration to Nabu Casa ZBT-2 with ember stack:

[2026-05-24 00:32:14] �[31merror�[39m: 	z2m: Error while starting zigbee-herdsman
[2026-05-24 00:32:14] �[31merror�[39m: 	z2m: Failed to start zigbee-herdsman
[2026-05-24 00:32:14] �[31merror�[39m: 	z2m: Check https://www.zigbee2mqtt.io/guide/installation/20_zigbee2mqtt-fails-to-start_crashes-runtime.html for possible solutions
[2026-05-24 00:32:14] �[31merror�[39m: 	z2m: Exiting...
[2026-05-24 00:32:14] �[31merror�[39m: 	z2m: Error: [BACKUP] Current backup file is not for EmberZNet stack.
    at EmberAdapter.getStoredBackup (/app/node_modules/.pnpm/zigbee-herdsman@10.0.7/node_modules/zigbee-herdsman/src/adapter/ember/adapter/emberAdapter.ts:1154:23)
    at EmberAdapter.initTrustCenter (/app/node_modules/.pnpm/zigbee-herdsman@10.0.7/node_modules/zigbee-herdsman/src/adapter/ember/adapter/emberAdapter.ts:925:29)
    at processTicksAndRejections (node:internal/process/task_queues:103:5)
    at runNextTicks (node:internal/process/task_queues:68:3)
    at processImmediate (node:internal/timers:452:9)
    at EmberAdapter.initEzsp (/app/node_modules/.pnpm/zigbee-herdsman@10.0.7/node_modules/zigbee-herdsman/src/adapter/ember/adapter/emberAdapter.ts:708:18)
    at EmberAdapter.start (/app/node_modules/.pnpm/zigbee-herdsman@10.0.7/node_modules/zigbee-herdsman/src/adapter/ember/adapter/emberAdapter.ts:1538:24)
    at Controller.start (/app/node_modules/.pnpm/zigbee-herdsman@10.0.7/node_modules/zigbee-herdsman/src/controller/controller.ts:146:29)
    at Zigbee.start (/app/lib/zigbee.ts:70:27)
    at Controller.start (/app/lib/controller.ts:111:29)

Am I out of luck or is there some "trick" that I might try?

Note: I am running Home Assistant with Zigbee2MQTT Addon on a RasPi 4.