A.  The provisions of this Subpart shall apply to every municipality incorporated on or after September 1, 1984.

B.  The provisions of this Subpart shall not be applicable in testing the validity of the corporate existence of a municipality incorporated prior to September 1, 1984.  All municipalities incorporated prior to September 1, 1984, shall have such validity tested according to the law in effect at the time of their incorporation.

Acts 1984, No. 536, §1, eff. Sept. 1, 1984.