Wyo. Stat. § 15-1-123: Prospective operation; existing transactions saved.

(a) This act applies to transactions entered into and events occurring after July 1, 1965, but may not be construed to affect any substantive or vested right.

(b) Transactions validly entered into before July 1, 1965, and the rights, duties and interests flowing therefrom remain valid thereafter and may be terminated, consummated or enforced as required or permitted by any statute or other law repealed by this act as though the repeal had not occurred, or at the option of the governing body, under this act as if commenced hereunder.