The Board of Trustees shall credit to each member’s individual account in the annuity savings fund of the appropriate State system: the member contributions of the member as provided in this Division II; and regular interest on the accumulated contributions of the member as provided in this Division II. From the annuity savings fund of the appropriate system, the Board of Trustees shall pay the accumulated contributions of a member or former member that, as provided in this Division II: are withdrawn by the member or former member; or if a member or former member dies, are paid to the member’s or former member’s estate or designated beneficiary. When a member retires or a former member commences to receive a vested allowance, the Board of Trustees shall transfer the member’s or former member’s accumulated contributions from the annuity savings fund of the appropriate State system to the accumulation fund of that system. If a former member is not eligible to receive a vested allowance under Title 29, Subtitle 3 of this article, when the former member’s membership ends, the Board of Trustees shall transfer the former member’s accumulated contributions from the annuity savings fund of the appropriate State system to the accumulation fund of that system. If accumulated contributions of a former member are transferred to the accumulation fund under paragraph (1) of this subsection, at the request of the former member, the Board of Trustees shall return the accumulated contributions to the former member from the accumulation fund.