Ark. Code Ann. § 14-163-214

Bonds issued under this subchapter may be sold with the privilege of conversion to an issue bearing a lower rate or rates of interest, upon such terms and subject to such conditions as the governing body of the city shall determine. However, under no circumstances shall the city receive less or pay more than it would receive and pay if the bonds were not converted, and any conversion shall be subject to the approval of the governing body of the city.