Relating to retirement under the Minnesota state colleges and universities (MnSCU) system; authorizing the board of trustees to extend tax sheltered annuity program vendor contracts in effect before a certain date; authorizing and providing for the purchase of prior service or leave credit in the teachers retirement association (TRA) by certain participants in the higher education supplemental retirement plan, providing for the transfer of funds from member supplemental retirement accounts to purchase the credit; increasing the maximum employer contribution limit to the higher education supplemental retirement plan (mk)