(a) The corporation may provide for the issuance of refunding obligations for the purpose of refunding obligations then outstanding that have been issued under this chapter, including the payment of the redemption premium on them and interest accrued or to accrue to the date of redemption of the obligations. The issuance of the obligations, the maturities and other details of them, the rights of the holders of them, and the rights, duties, and obligations of the corporation with respect to them are governed by the provisions of this chapter that relate to the issuance of obligations, insofar as those provisions may be appropriate.
(b) Refunding obligations may be sold or exchanged for outstanding obligations issued under this chapter, and, if sold, the proceeds may be applied, in addition to other authorized purposes, to the purchase, redemption, or payment of the outstanding obligations.