Mo. Rev. Stat. § 484.270

Every final judgment or order of removal or suspension, made in pursuance of the provisions of this chapter by any court so authorized, shall operate, while it continues in force, as a removal or suspension from practice in all the courts of this state; provided, that any attorney or counselor at law removed from practice or suspended for a longer term than one year, on application to the supreme court or in the court in which the judgment of removal or suspension was first rendered, may be reinstated as such attorney or counselor at law, in the discretion of the court, at any time after one year from the date of such judgment of removal or suspension.