No, you can't simply import in new versions of SCEA players. If it were that easy....
What you'd have to do is
re-import the entire roster of created players into a roster that already has Holt, Ackley, etc.. listed with correct secondary positions. Not really worth the effort for a half dozen or so players, imo, when you can work around this easily by editing their primary position from time to time if they're even on your team to begin with. Most of these "utility" players aren't starters anyway.