Mo. Rev. Stat. § 87.100
Any fire department pension fund and relief association existing in this state under sections 87.495 to 87.515, is hereby empowered, by a majority vote of its members, to amalgamate with the board of trustees of the firemen's pension fund formed under sections 87.010 to 87.105 in the same city, village or town, and thereupon all the assets and property of said relief association and all its rights and privileges shall be vested in said board of trustees, and all obligations, debts and liabilities of said association shall be assumed and shall become obligations, debts and liabilities of said board of trustees, and thenceforward the business of said amalgamated organizations shall be conducted under the terms of sections 87.010 to 87.105 by said board of trustees.
§ 87.100, RSMo