Lets look at this whole DNC debacle over Michigan and Florida in a different way. Lets supposed Hillary Clinton is the New York Yankees, and Barrack Obama is the Chicago Cubs. I know this is not a perfect analogy, but it proves a point, so bear with me.
Throughout the entire regular season the Yankees felt like they were automatically going to win the League Championship, but after the first half of the season the Cubs pulled out in front on the leader board by about two games. In the second half the season both teams fight hard, and each have their victories and defeats, but the Cubs wind up keeping their narrow lead, and, inevitably, will win the the League Championship.
Then, the Yankees say, "no ... we played two preseason games against the Cubs and won. We want those game to count towards the League statistics!" Do you think that type of argument would fly?
The rules might give you the outcome you want, but you follow the rules that were in place when you started.