I followed the directions going from Zooz 700 firmware version 7.18.3 to Zooz 800 stick with 7.19 (ZJS reports 1.20) and it was successful! The only caution to anyone else who does a backup/restore is if you have devices named differently in the Zwave integration than in ZJS UI, your ZJS UI names will clobber the Zwave integration names. This broke a few things on my dashboard, not sure why, but had no effect on automations,