What Steve said is right, and as far as changing the attributes, if you change them in NHLview they won't change the overall IN nhlview, however when you save them and then load them in your game, your players overall WILL change in NHL 13. That being said feel free to edit away in NHLiew. Make your favorite prospect a 75 instead of a 55, but remember the rosters are made to be as accurate as possible and players will progress quickly if you let them.
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