Utah Code § 11-14-312

All bonds issued by any local political subdivision before May 1, 2006, and all proceedings had in the authorization and issuance of them are hereby validated, ratified, and confirmed; and all such bonds are declared to constitute legally binding obligations in accordance with their terms. Nothing in this section shall be construed to affect or validate any bonds, the legality of which is being contested as of May 1, 2006.