may continue to make contributions after June 30, 1989, as if IC 5-10.2-2-5 had not been repealed. Such an institution may continue to make additional contributions for members on whose behalf additional contributions were being made before January 1, 1989.
shall continue to receive credit, for the determination of eligibility for benefits only, for up to five (5) additional years of service with the institution, subject to all the provisions of the retirement fund law. The additional service credit and the salary in the non-covered position shall not be included in the computation of benefits from the retirement fund.
IC 5-10.2-5-20