Indiana Code Title 36. Local Government § 36-8-2-14

Sec. 14. (a) The repeal of section 13 of this chapter does not operate to void an ordinance or resolution adopted by a municipality before January 1, 2019, that exercises a power:

(b) The validity of an ordinance or resolution described in subsection (a) may be challenged in a legal proceeding by an aggrieved party.

(c) The repeal of section 13 of this chapter operates to void an ordinance or resolution adopted by a municipality after December 31, 2018, that exercises a power under the sole authority of section 4 of this chapter.