Updating your server
Using Steamcmd
Once there is a new update available, you can always use the Steam Update button to get the latest files.
Backups
When you initiate a steam update on your server, we take a backup of both ServerHostSettings.json and ServerGameSettings.json otherwise steamcmd will overwrite them. The current auto save settings also allow you to set save interval and save count in case the data persistance gets corrupted after a restart or an update.