Same device on two homeys

When you have no zigbee devices,
I’d suggest this step order:

  1. 2019: perform a backup
  2. 2019: remove all zwave devices
  3. 2019: remove flows which should be on 2023 only
  4. 2019: install Homesh Satellite**
  5. restore backup of 2019 to 2023
  6. 2023: Start it up
  7. 2023: Remove flows which should be on 2019 only
  8. 2023: wait for the zwave mesh to start and ‘settle’
  9. 2023: in the meantime, install Homesh Controller**
  10. 2023: fix (re-pair) possible offline zwave devices (shouldn’t be necessary in theory)

**) optional: With both Homesh apps, you can use the 2023 to control sounds & speech, and led animations on the 2019 directly;
And, you can start flows on it (for example for SDK2 apps you want to keep using?)