Hey all, for starters, I too am using a Nortek HUSBZB-1. I did the migration yesterday and it was a bit bumpy, but it was also an awesome opportunity to do some housecleaning.
I have 23 active devices and hundreds of entities. Most of my battery-powered sensors did NOT migrate well and either needed to be woken. I have 7 Ecolink PIR sensors that needed to have their batteries pulled and put back in. I have 3 Zooz 4-in-1 sensors that were very problematic. They needed factory resets and had to be re-included, but they are stable now – really, they are actually way better than with the OZW integration, more responsive. Lastly I have a Yale lock that needed to be factory reset and re-included into the Z-Wave network. It migrated okay, but it came over as an unsecure device.
All in all, the number of entities that won’t come over seem daunting at first, but if you’re like me, you have a ton of them that could probably use a good clean/rename. I am very satisfied this far with Z-WaveJS and I’m glad I went through it. It does seem way more responsive (sensors trigger immediately and the automation is really fast – e.g., lights come on instantaneously now).
Oh, BTW – on the Failed of connect error in the Add-on: Empty all the text boxes and save and reload the add-on. Those boxes will repopulate with correct values. Here I had to reload it again. Once I went into the migration wizard, it connected just fine.