Mo. Rev. Stat. § 513.325
When any officer shall have levied upon any goods and chattels, real estate or other effects by virtue of any execution, and the term of service of such officer shall expire and be determined before or after the sale thereof, and before the purchaser shall have obtained a deed therefor, duly executed, such officer shall, nevertheless, have power to do and perform all things in relation to such execution and the sale of such property, and in making, acknowledging and executing a deed to the purchaser, in the same manner and with like effect, to all intents and purposes, as if his term of office had not expired; and he and his sureties shall be subject to the like penalties, actions, proceedings and judgments for neglect, misconduct or failure therein, as if he still continued in office.
§ 513.325, RSMo