I'm not familiar with this one myself, but I would suspect people like @kahn-hubitat or @aaiyar may have done this before...? If not hopefully others around here can help, otherwise I / we can try and figure it out with you.
I suspect you should be able to follow some of the steps I took down for people transitioning onto the version of the drivers I released when I took over. Obviously some of the steps relating to removing and re-installing the drivers via HPM can be ignored. I would suggest following the suggestion of noting down existing rules and other dependencies on the existing devices. I am expecting you will be able to:
- Turn off the existing data feed
- Leave the HE devices in place at this stage
- Setup the new Gateway, i.e. in the WS View App
- Setup the data feed for HE in WS View App
- Setup the new HE gateway device and let it create devices as it does
- Swap devices in HE apps / rules
- Remove your old HE devices
