Mo. Rev. Stat. § 71.860

71.860. Application of section 71.015 — exceptions. — The provisions of section 71.015 shall apply as well to all cities, towns, villages and municipalities of whatsoever kind, located in any county with a charter form of government where fifty or more cities, towns and villages have been incorporated, except as provided in section 71.920 and sections 72.400 to 72.420 .

(L. 1963 p. 126 § 1, A.L. 1989 H.B. 487, A.L. 1995 H.B. 446) (1966) Held that Sawyers Act did not apply to 1960 annexation by constitutional charter city as 1963 amendment specifically providing for application to constitutional charter cities located in St. Louis County (§ 71.860, RSMo) does not apply retroactively. Witt v. City of Webster Groves (A.), 398 S.W.2d 16. (1966) Legislature in enacting statutes specifically relating to annexation in first class charter county intended that compliance therewith should precede compliance with general annexation statutes so that election provided for in special provision must precede obtaining a declaratory judgment as to reasonableness of proposed annexation. City of Kirkwood v. Allen (Mo.), 399 S.W.2d 30. (1966) The unconstitutionality of Section 71.015 applying Sawyers Act to constitutional charter cities as mandatory procedure does not render invalid other section of Sawyers Act relating to annexation as applied to such cities. St. Louis County v. City of Florissant (Mo.), 406 S.W.2d 281.