I made a small Cheat Engine patch for the game, it allows you to prevent the mission ending when the timer runs out. Just attach cheat engine to the game, then load the file and check the "Disable Mission Timer" checkbox. When the timer goes to zero it begins counting up, the AI still functions even after you pass the time limit (though no more timed scenario actions will occur).
I made patches for Normandy, Shock Force 2, Cold War, and Black Sea, which can be found in their respective forums
CM Black Sea.CT
