[2019] Backup Recovery (Local)

In theory, you could always create manual backups of your save folder. They can be found here, depending on the map you're using:

SteamLibrary\steamapps\common\ATLAS\ShooterGame\Saved\BlackwoodSavedAtlasLocal or SteamLibrary\steamapps\common\ATLAS\ShooterGame\Saved\SavedAtlasLocal