I just had the same thing happen.
both hubs were running .105 Cloud backup made off of old hub, restored to new hub. Everything there except all zwave devices are missing. I don't have any zigbee devices
I've done two restores now from backup, and both times, no Z-wave devices.
Update: Went back to the original hub, and took another cloud backup, and another restore. That seemed to work. Maybe sometimes when taking a backup the zwave tables are being missed?