Rugerred,
Plan submissions effective the first of the month must be submitted by the 15th of the month prior. For Jan 1, this is December 15th.
I hope this clarifies where the date comes from. If you haven't applied for replacement Jan 1 coverage by the deadline, the auto-renew kicks in to ensure there isn't a lapse of coverage.
I wonder if the transition from one carrier to another will be handled by the Exchanges? On top of all the transitions on existing block, we are going to have to make sure that the old plans are cancelled. I can totally see drafts from 2 carriers starting in early January and clients screaming about overdraft fees. It is going to be a wild ride.