Mo. Rev. Stat. § 426.390

When, in any case of assignment now or hereafter pending, the temporary assignee appointed according to section 426.250, has failed or shall fail to act, or to make the report upon claims allowed by him as in said section mentioned, then it shall be the duty of the circuit court, at any session during the pendency of the matter of such assignment, to hear such evidence touching the action of such temporary assignee in the premises, or touching the validity of the claims of the general assignee, as he may offer; and if it appear that said claims had been, in fact, regularly allowed, or that they are just, the court shall allow the same, and order them to be paid as other claims.