6 months ago - Obsidian Chris - Direct link
We are aware of an issue that resets players' progress when they load a backup Shared World save on Steam. Until this is resolved, please do not attempt to load a backup Shared World save if you are playing on Steam. The team is currently working on a hotfix, and we will update everyone once it becomes available.

Thank you, and we apologize if you have been affected by this bug.