Hello, the steps for moving a device across rooms or homes are as follows:
Move to Another Room
Open the App's home page, tap the menu icon (☰) in the upper right corner, and select Manage Rooms;
Select the target room, tap the Device button, and the page will display all devices not added to this room;
Tap the + button in front of the device to add it to the room.
Move to Another Home
Direct cross-home migration of devices is not supported for the time being. You need to delete the device from the original home first, then reconfigure the network and add it to the target home.