Segregation and payment of benefits. During any period in which the
issue of whether a domestic relations order is being determined by
the Pension Board, by a court of competent jurisdiction, or otherwise
and payments would be payable to the member, the Pension Board shall
direct the custodian to segregate in a separate account the amount
which would have been payable to the alternate payee during such period
if the order had been determined to be a qualified domestic relations
order. The segregated amounts shall be invested in a savings account
or certificate of deposit. There shall be allocated to the segregated
amounts all interest earned on such savings account or certificate
of deposit. If within 18 months after receipt of the order, or modification
thereof, it is determined to be a qualified domestic relations order,
the Pension Board shall direct the custodian to pay the segregated
amounts to the person or persons entitled thereto. If within 18 months
after receipt it is determined that the order is not a qualified domestic
relations order, or the issue as to whether such order is a qualified
domestic relations order is not resolved, then the Pension Board shall
direct the Trustee to pay the segregated amounts to the person or
persons who would have been entitled to such amounts if there had
been no order. If the determination of the qualified status of a domestic
relations order is made after 18 months after receipt, the order shall
only apply to benefits distributed after the date of such determination.