Warlock – “Expansion” [4th campaign, 2nd mission]

Hey everyone, could you please help me out? I was playing Heroes and got to the Warlock campaign in the expansion. I went on a business trip, and when I came back, I found out that my wife reinstalled Windows. Now my progress is gone. I don't want to have to play everything from the beginning. Is it possible to start playing Heroes from the 4th campaign (are there any patches or mods that allow this)? Or is there a way to restore my progress?