@milsbest: I found a solution for this problem, You probably won't reply because you posted about the problem a couple of year ago but I'll still reply. This Is A Solution For Xbox 360 Users, If You Play the game on a disc Install The Game, The Installation Might Take 12 Minutes. unfortunately I don't really have a solution for the other platforms but I suggest the other platforms should do the same thing. after the installation play the game on the dashboard that shows you the downloaded games you have, Play The Game And Then When You're Ready To Leave The Game It'll save automatically, Once It Takes you make the Main Menu, There will be 2 icons near the Continue, New Game And Level Select Texts, One Of The Icons Will Say “Absolution Score” And Will Show Your Score For The Level You Were On, Under that it'll Show Your progress in the game For Example, Mine Will Say 14/20. There's A 20 Because They're Are 20 Missions In Total, The Text Icon Is That Same Thing But It's A Different Save Slot.

Doing this Will Make The Continue Text Be Available