How do you carry over saved levels in a finished game to a new game in Marvel Ultimate Alliance?

This is for PC. I've finished thrice (one easy and two normals) but there seems to be no box asking me if i would like to carry over the levels i had on a previously saved game. HELP.How do you carry over saved levels in a finished game to a new game in Marvel Ultimate Alliance?There is not always an option to do this in every game, however I would suggest going to my source site to investigate the matter further. Usually such games will say "New Game +" at the main menu or start a new game automatically when you load the data containing the completed save file.