An administrative director of the Alaska court system who withdraws from the judicial retirement system under AS 22.25.012 is eligible for membership in the plan and shall receive credited service in the plan for service rendered as administrative director. To be eligible for membership in the plan under this subsection, the administrative director must contribute to the plan
(1) the amount the director would have contributed if the director had been a member during the director's period of membership in the judicial retirement system; and
(2) any contributions for services as administrative director refunded by the plan at the time the director became a member of the judicial retirement system.