This Part does not affect Chapter 953, Session Laws of 1983, Chapter 847, Session Laws of 1985 (1986 Regular Session), or Chapters 204, 233, or 1009, Session Laws of 1987, authorizing annexation agreements, but any city which is authorized to enter into agreements by one of those acts may enter into future agreements either under such act or this Part. (1989, c. 143, s. 1; 1991 (Reg. Sess., 1992), c. 1030, s. 48.)