Mo. Rev. Stat. § 426.210: Decisions of assignee final, unless appeal asked for — appeal to circuit court.

The decision of the assignee in relation to all claims presented to him for allowance shall be final, unless a creditor or some other person interested shall, after a decision is made on any such claim, ask an appeal therefrom; and all appeals so asked shall be allowed by such assignee to the circuit court having jurisdiction of the matter of the assignment, and all appeals heretofore taken shall be transferred to and perfected in such circuit court.