Section 3-9-403 - Effect on existing powers of attorney(a) Except as otherwise provided in this act, this act applies to a: (i) Power of attorney created before, on or after the effective date of this act;(ii) Judicial proceeding concerning a power of attorney commenced on or after the effective date of this act;(iii) Judicial proceeding concerning a power of attorney commenced before the effective date of this act unless the court finds that application of a provision of this act would substantially interfere with the effective conduct of the judicial proceeding or prejudice the rights of a party, in which case that provision does not apply and the superseded law applies.(b) Except as otherwise provided by this act, an act done before the effective date of this act is not affected by this act.(c) A power of attorney properly executed and valid on the effective date of this act shall remain valid and enforceable and shall be construed according to the terms contained therein and accepted and relied upon in accordance with the provisions of W.S. 3-9-119.(d) A power of attorney created prior to the effective date of this act or existing on the effective date of this act is durable as determined pursuant to W.S. 3-9-104 and is otherwise construed and applied in accordance with this act.Added by Laws 2017 , ch. 117, § 1, eff. 1/1/2018.