(1) Bonds may be issued for the purpose of refunding any bonds issued under this subchapter.
(2) Refunding bonds may be either sold or delivered in exchange for the bonds being refunded.
(3) If sold, the proceeds may be either applied to the payment of the bonds being refunded or deposited in trust and there maintained in cash or investments for the retirement of the bonds being refunded, as shall be specified by the central business improvement district in the resolution or trust indenture securing the bonds.
(4) The resolution or trust indenture securing the refunding bonds may provide that the refunding bonds shall have the same priority on assessments or revenues pledged for their payment as was enjoyed by the bonds refunded.
(5) Revenue refunding bonds shall be sold and secured in accordance with the provisions of this subchapter pertaining to the sale and security of the bonds initially issued.
(6) Refunding bonds secured primarily by the mortgage and pledge of assessed benefits may also be issued in accordance with the laws governing refunding bonds of municipal improvement districts generally.