Campaigns disappeared yesterday!!!!!

[jamesdietz]

(This may be OT here so please move if necessary)
Yesterday I noticed all campaigns ( mostly from here,) but default disappeared for game play...completely,except for the single mission variety .Its easy enough to reload them , but still I wonder what happened? I'm not using Cloud at all, so that didn't do it .I did notice a smallish auto-download from Steam yesterday, like everyone else , but I can't imagine that had anything to do with it...do the best and the brightest at this site have any ideas?

[adonys]

the campaign.ini file was replaced with the original one. That's the only possible explanation.