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The saved games for Campaign and Sandbox should not share the same file location, especially without an overwrite confirmation! I just lost several in-game years worth of progress in the Campaign because I erroneously thought, given how the UI was presented, that I could safely name my saves the same.

EDIT: Added screenshot of save game UI for clarity, as people may not be aware that the game visually separates the two game modes on this screen.
Post edited December 05, 2020 by windslicer