I’d restore a backup from Homey 1 (H1) to Homey 2 (H2).
Shut H1 down first!
H2 actions:
When H2 is up and running
- Remove all zigbee devices you intend to keep at H1.
- Disable any flow which you intend to run at H1
H1 actions
- Shut H2 down first!
- When H1 is up and running, remove all zigbee devices you didn’t remove from H2.
- Disable any flow which you intend to run at H2
- When you’re very sure no zigbee devices are present on both Homeys:
- Start H2
App Control
At this moment, we can’t merge 2 Homeys into the app. The easiest way to control H2, without logging in & out every time:
- Create a 2nd Homey account
- Transfer the owner role from H1 account to the new created 2nd account (while H2 is a copy of H1, the H1 owner account is also H2 owner)
- Change the H1 account rights to ‘Manager’
- At H1, invite the 2nd account as ‘Manager’.
When done, you’d be able to switch Homeys by pressing a few buttons:
Only for certain tasks, you’ll need to login using the the right owner account:
Managing users and sytem updates
Communication:
You can also use MQTT as communication between both Homey’s, using virtual MQTT devices, but it’s not everyone’s cup of tea.
About webhooks as presented by Henk:
In your situation ou can use local webhooks, to avoid using and needing Athom cloud:
I’ve also heard Athom is planning to release an app called Homey Link, which might be what you need. But I wouldn’t wait for it to be published.