70 ILCS 1545/14

The park employees annuity Act and the Park employees annuity Fund shall be continued to the end that the annuity rights and credits of eligible members, contributors and annuitants shall be preserved. Persons employed by the park district in positions transferred to the city, other than park policemen, who are disability beneficiaries on the effective date under the park employees annuity fund shall, upon termination of their disability, unless they are then employed by the park district in another capacity, be transferred to the employment of the city in accordance with the provisions of Section 4, but shall remain members of the park employees annuity fund.