(1) Unless at any time prior to or at original issuance of a registered public obligation the official or official body of the issuer determines otherwise, this act is applicable to such registered public obligation notwithstanding any provision of law to the contrary. When this act is applicable, no contrary provision shall apply.
(2) Nothing in this act limits or prevents issuance of obligations in any other form or manner authorized by law.
(3) Unless determined otherwise pursuant to subsection (1), the provisions of this act are applicable with respect to obligations which heretofore have been approved by vote, referendum, or hearing, authorizing or permitting the authorization of obligations in bearer and registered form, or in bearer form only; and such obligations need not be resubmitted for a further vote, referendum, or hearing, for the purpose of authorizing or permitting the authorization of registered public obligations pursuant to this act.