(1) If a retirant is authorized by the supreme court to perform judicial duties for a limited period or a specific assignment pursuant to section 23 of article VI of the state constitution of 1963, the retirement system shall continue payment of his or her retirement allowance without change in amount or conditions. A retirant is not a member during the period he or she performs judicial duties for a limited period or a specific assignment as authorized by the supreme court pursuant to section 23 of article VI of the state constitution of 1963.

    (2) If a retirant is elected or appointed by the governor as a judge or state official, the retirement system shall suspend payment of the retirant’s retirement allowance during the period he or she remains in office. The retirement system shall base the suspension of benefits on 1/12 of the annual retirement benefit for each month the retirant serves in the office to which he or she was elected or appointed. A retirant who is again elected as a judge or state official is a member pursuant to section 401. The retirement system shall recalculate the retirement allowance of a retirant who again becomes a member under this subsection if the member leaves office due to disability or death, or if the member again retires after serving 1 full term or more in office. A retirement allowance recalculated pursuant to this subsection is subject to section 503. The retirement system shall begin payment of the recalculated retirement allowance under this subsection to a person who again retires effective the first of the month following the month in which the person leaves office. If a retirant again becomes a member under this subsection but is not entitled to have his or her retirement allowance recalculated under this subsection, the retirement system shall begin payment of his or her retirement allowance without change in amount or conditions effective the first of the month following the month in which the person leaves office.