These is a list of important files on the robot. I am mainly writing this down here so everyone can backup these and restore them in case of full reset+reflashing.
Zones + Spots configuration, mqtt + other config
Status to keep map
various map data
mnt/data/rockrobo/user_map0 current map
mnt/data/rockrobo/last_map previous map, will be used if robot does not recognize where it is
mnt/data/rockrobo/robot.db last cleaning path
mnt/data/rockrobo/PersistData virtual zones and walls?
mnt/data/rockrobo/StartPos.data named positions
To backup copy the files from the robot to a safe place. (lab.cfg can be easily set, see FAQ)
To restore just copy the files over to the robot and reboot valetudo.