Mo. Rev. Stat. § 72.325
Upon approval of the question in each of the municipalities involved, the absorption shall be accomplished on the date contained in the resolutions by the municipality specified in the resolution as the one which is to absorb the other municipalities shall succeed to the corporate existence and the territorial limits of the municipalities being absorbed and the municipalities absorbed shall cease to exist as separate municipal entities. All the property, real, personal and mixed, and all rights of every kind and nature belonging to and vested in each municipality being absorbed shall be transferred to and vested in the municipality which is absorbing the others on the effective date of the resolutions. All debts and liabilities and all other choses in action, and all and every interest of or belonging to each of the municipalities absorbed shall be taken and transferred to and vested in the municipality which is absorbing the others on the effective date of the resolutions. The title to any real estate, or any interest therein, vested in any municipality which is absorbed shall not revert or be in any way impaired by reason of the absorption.
§ 72.325, RSMo