Mich. Comp. Laws § 38.2747

Sec. 17. If a change or error in any records of the trust results in a member, past member, or his or her dependent paying into or receiving from the trust more or less than the member, past member, or his or her dependent should have paid or would have been entitled to receive had the records been correct, the trustees shall correct the error and, as far as practicable, shall incrementally adjust future payments to correct for the change or error.