Mo. R. Civ. P. 41.06
As amended through October 1, 2024
Rules 41 to 101, inclusive, shall govern all proceedings in actions brought after their effective date, and also all further proceedings in actions then pending, except to the extent that in the opinion of the court their application in a particular action pending when the Rules take effect would not be feasible or would work injustice, in which event the former procedure applies.
Mo. R. Civ. P. 41.06
Committee Note - 1974
This is substantially the same as prior Rule 41.08.
Compare: Rule 86 of the Federal Rules of Civil Procedure.