Voting Member

My question really is more about motions expiring, rather than the content of the motion, but thanks for the feedback!

My organization voted two years ago to have new officers take office on a specific date each year. The Parliamentarian has yet to publish a new copy of the standing rules but we have referenced this vote each year when discussing officer changeover and it has been our accepted practice for over forty years. Now, the incoming board wants to take office immediately and the claim is that a motion expires after one year. This was a duly made motion that was seconded and received a unanimous vote of the membership but again, the Parliamentarian has yet to publish new standing rules. I have never heard that a passed motion expires after one year?