*sighs*
That would be your selected schemes altering the players OVR ratings. If you look closely, all their attribute ratings should be the same, its just that each scheme setting calculates the OVR rating differently.
It's amazing to me how many people hate on CCM simply because they refuse to take the time to explore it, and learn it. It's a completely new mode, that takes on much of the old franchise differently. It's a change from what we're used to, I get that, but at least take the time to read the CCM manuals that are out there in PDF formats, educate yourself on the mode, rather than just freak out because its different. Once you adjust to it, you'll see its really not that far from what you're used to.
As long as you go into "my madden" edit your roster, or load your edited roster, then start a new OFFLINE CCM and select "import my madden roster", your edited rosters will be there.