Mo. Rev. Stat. § 521.440
Current with changes from the 2023 Legislative Session
The person appointed attorney, as directed, shall, as long as his appointment continues in force, be deemed, to all intents and purposes, the representative of the decedent, and shall have the same power to file pleadings, order process, or take any other steps in the defense, as the decedent would have were he living.
§ 521.440, RSMo
RSMo 1939 § 1481