My C8-Pro upgrade to Zwave JS failed for all my devices necessitating revert back

I decided to try Zwave JS on my Hubitat C8-pro and pushed the button. Upon completing and waiting about 30 minutes none of my devices worked. I ended up reverting back to the legacy Zwave and undoing the Zwave JS conversion. I even tried to refresh each device manually. Reboot - etc. No response. I have mostly older Leviton DZMX1 dimmers and lamp / power plug in modules. Any ideas?

I had a few issues when testing earlier this year under the beta.
One thing I saw was my ZW topology map showed nothing which led me to learning about the "interview" process to bring devices into the JS fold.
This may happen auto-magically in the background now, I don't know.
Check your ZW topo map in Settings | ZW and see if there is anything there.

https://community.hubitat.com/t/2-4-2-106-129-zwave-js-topology-and-graph-have-no-devices-c8-pro/153892

The only thing about the migrate to ZWJS was many of my devices listed as S2 unauthorized. But this url corrected it.

http://x.x.x.x/hub/zwave2/reinterview?node=x

Use the ip address of your hub for the x.x.x.x and the node number in decimal (is how I remember it) which comes from the settings z-wave details page.

I do not recall that nothing worked though. I use Levition switches but the newer zw15s, zw6hd, and zw4sf devices. I also read that had I waited long enough the issue would self resolve.

Yes. I found my GoControl garage door openers required this on reboot.
They would also go into alarm at a random point as well until this was done.