Mo. Rev. Stat. § 544.330
If the person recognized does not appear before the associate circuit judge according to the condition of such recognizance, the associate circuit judge shall record the default, but such default may be set aside by the associate circuit judge on the appearance of the prisoner, and for good cause shown, at any time to which the examination may be continued by said associate circuit judge; and in case such default be not set aside, as aforesaid, the associate circuit judge shall certify the recognizance, with a record of such default, to the court having cognizance of the offense charged against the person so recognized, and the like proceedings shall be had thereon as upon breach of condition of a recognizance for appearance before said court.
§ 544.330, RSMo