Ind. Code § 3-11-1.5-32

Sec. 32. The legislative body of a municipality may not change the boundary of a district established under:

(1) IC 36-3-4-3;

(2) IC 36-4-6-3;

(3) IC 36-4-6-4;

(4) IC 36-4-6-5;

(5) IC 36-5-1-10.1;

(6) IC 36-5-2-4.1; or

(7) IC 36-5-2-4.2;

after November 8 of the year preceding the year in which a municipal election is to be held and before the day following the date on which the municipal election is held except to assign territory to a municipal legislative body district in an annexation ordinance.