Mo. Rev. Stat. § 1.180
Current with changes from the 2023 Legislative Session
No action or plea pending at the time any statutory provisions are repealed shall be affected by the repeal; but the same shall proceed, in all respects, as if the statutory provisions had not been repealed, except that all proceedings had after the repeal becomes effective are governed by procedural rules and laws then in effect, insofar as they are applicable.
§ 1.180, RSMo
RSMo 1939 § 662, A.L. 1957 p. 587