It appears my IOS app auto updated on Oct. 27th and with it my second Rachio controller and all schedules were completely deleted, how do I roll back or recover without having to go through the process of completely starting from scratch?
After I got this update I thought the same thing! If your issue was the same as mine then you’ve just been hit by Rachio’s addition of support for multiple homes.
I expect you’ll find if you tap on your home’s name at the top you’ll see duplicates of the same home. Each home will have a different controller / device. Go into each home, tap the circle-with-three-dots, and move them all into the first home. Then you can delete the duplicate homes.