I thought it took a lot of nerve for the national parties to penalize states for moving their primaries, especially since the states pay for the primaries. But if the point was keeping states from moving primaries in the future, seating the delegates anyway erases any benefit the penalty might have had.
This is the same problem Democrats have in foreign policy. They love laws and they hate enforcement. It's why they support the United Nations 17 resolutions against Iraq, but oppose Bush enforcing those resolutions. And they wonder why they struggle for credibility.