1. A district may issue negotiable refunding bonds for the purpose of refunding, extending or unifying the whole or any part of any bonds of a district then outstanding, or any bonds, notes or other obligations issued by any other public agency, public body or political subdivision in connection with any facilities to be acquired, leased or subleased by that district, which refunding bonds shall not exceed the amount necessary to refund the principal of the outstanding bonds to be refunded and the accrued interest on those bonds to the date of that refunding, together with any redemption premium, amounts necessary to establish reserve and escrow funds and all costs and expenses incurred in connection with the refunding. The board shall provide for the payment of interest and principal of any refunding bonds in the same manner as was provided for the payment of interest and principal of the bonds refunded.

2. In the event that any of the board members or officers of a district whose signatures appear on any bonds or coupons shall cease to be on the board or cease to be an officer before the delivery of those bonds, those signatures shall remain valid and sufficient for all purposes, the same as if that board member or officer had remained in office until the delivery of those bonds.