Mo. Rev. Stat. § 473.590
Within twenty days after the filing of the final settlement and petition for distribution, or such longer time as may be ordered by the court, any interested person may file written objections thereto. The court may receive and file a final settlement before the date specified in the published notice, or before the date to which the settlement was continued, but in case of such premature filing the twenty-day period for filing objections shall run from the date specified in the published notice or the date to which the settlement was continued, as the case may be. The objections must be in writing and clearly state the specific grounds of objection and the modification desired. If no objections are filed, the court may approve the final settlement and order distribution as prayed, without hearing if it deems such action proper. If objections are filed, or if the court does not deem it proper to approve the final settlement and order distribution as prayed without hearing, a hearing on the matter shall be had.
§ 473.590, RSMo
Effective 1/1/1981