Mo. Rev. Stat. § 536.160

In the event a reviewing court reverses a decision of a state agency, remands the matter to the agency for further proceedings and orders the payment into court of any increase in funds authorized by said decision, and thereafter, on remand, the state agency reaches the same result, reaffirms or ratifies its prior decision, then the entity which paid such funds into court shall be entitled to a refund of such funds, including all interest accrued thereon. This provision is enacted in part to clarify and specify the law in existence prior to August 28, 2001.