122.11  Reemployment after refund.--Any state or county officer or employee whose contributions have been refunded as provided in s. 122.10 and who is subsequently reemployed by the state or a county of the state shall be treated as those persons who enter employment of the state or a county of the state the first time as provided in s. 122.03; provided, however, if any former member complies with s. 122.03(6) and receives service credit for 20 or more years for service rendered prior to June 1, 1961, such member shall not lose his or her rights under s. 122.01(3).