In instances where bonds were issued by a municipality under Arkansas Constitution, Amendment 13 [repealed], and the project for which the bonds were issued has not been commenced within ten (10) years after the bonds were issued, all interest accrued and accruing on the bond principal may be transferred into the general fund of the city upon a two-thirds (2/3) vote of its governing body. The principal balance shall be refundable to the taxpayers under the procedure prescribed by this subchapter.