Misjoinder of parties is not ground for dismissal of an action. Parties may be dropped or added by order of the court on motion of any party or of its own initiative at any stage of the action and on such terms as are just. Any claim against a party may be severed and proceeded with separately.
Mo. R. Civ. P. 52.06
Committee Note-1974
This is the same as prior Rule 52.06(a).
Compare: Rule 21 of the Federal Rules of Civil Procedure.