Mo. Rev. Stat. § 509.350
509.350 Motion searches record.
509.350. Motion searches record. — Upon motion directed to an answer or reply, substantial defects in all prior pleadings may be considered and judgment rendered against the party who has first failed to state a claim upon which relief can be granted or to state a legal defense to a claim.
(L. 1943 p. 353 § 67)