Mo. Rev. Stat. § 506.030: Power of supreme court to promulgate rules to harmonize code.

If any part of this code shall be found to be in conflict or discordant with other parts of this code or with other statutes relating to civil procedure, the supreme court shall have power to promulgate rules necessary to harmonize the same so as to promote the orderly administration of justice. No such rule shall abridge, enlarge or modify the substantive rights of any litigant. Such rules shall be effective until superseded by legislative enactment.