I just got out of the hospital after 2 weeks and found that the wife unplugged the ST hub to make room for a stupid LED xmas tree. When I plugged it back in, all programming was lost. Had to use the welcome code to get it going again. I did find that the batteries also were dead. Most likely it was not AC powered for at least a week or more. I have 60+ devices; secure locks, scenes, routines, motion detector, smartapps, sprinklers, remotes, smoke & carbon alarms, switches, lights, hubs, garage doors, repeaters and sensors. Some stuff is tucked into hard to get places. I have to now re-pair everything? That is insane. I now feel like taking this complete load of garbage ($$$$) and throwing it all in the trash. This will take me days and days to get done. Why would a system like this be designed so poorly? No consideration for backup/restore, and no NV storage? If I knew these things up front, I would not have invested thousands into this garbage.
I see only a little talk on this, no one else has had this happen?