Once in a Be A Pro season, you cannot mess with the rosters or stats. You need to edit the rosters BEFORE you create your Be A Pro save. If you have all ready started, then you will need to create a new save. I guess that I should have specified that.
And just save the rosters as a different name so you know which one has been messed with and which is the default (if you never play offline other than for achievements, then don't even worry about making a separate save). If for any reason you mess something up, you can have the roster default back to original (can't remember where the option is).
PRE-PATCH MARATHON Trials HD- (10/3/09-11:38 PM)