i haven't looked into it. the reason they leave is "brand recognition" but throughout the season, i dont think my brand recognition ever went up. Iowa State is a C+ in that category.
the way its supposed to go up is winning big primetime games, winning playoff games, etc.. in season 2, i scheduled P4 teams who were rated hoping wins will improve that.
fwiw those were the only 2 and now, currently, i don't have any want to transfer because of that reason. But I agree.. losing those 2 with no hope of retaining them is very, very dumb.