Z-wave - transfer from Pi 3 to Pi 4?

Hi! I’m using the zwave-js integration on a raspberry pi 3. I have about 60 devices now and it’s getting to be far too slow, so I built a raspberry pi 4. The pi3 uses the zwave.me daughter card, and the pi 4 uses the aeotec usb dongle. Is there a recommended way to transfer all my devices from the pi 3 to the pi 4?

I did a complete backup of the config and then imported it into the pi 4, including making note of the zwave network id, but it did not work correctly. All of the devices appeared in the entity list, but they were all marked ‘unresponsive’. Should I be doing something differently?

also, once the pi 3 is made redundant, is there a way to turn it into a zwave repeater?

Was recommended once to add 2nd controller to existing Zwave as secondary controller. After, set it as main controller in network and remove other

Else I think you just have to reset all devices and readd everything to new controller/network