The system shall include the service credit awarded to a nonmember spouse in the judgment or court order to determine the eligibility of a member for a retirement or disability allowance under this part. That portion of awarded service credit based on previously refunded accumulated retirement contributions or on permissive service credit may not be used by the member for eligibility requirements until the member has redeposited or purchased his or her portion of the service credit. The member’s service retirement allowance shall be calculated based on the service
credit in the member’s account on the effective date of service retirement.