(a) Except as otherwise provided in sections 1-350 to 1-353b , inclusive, on and after October 1, 2016, said sections apply to:
(1) A power of attorney created before, on, or after October 1, 2016;
(2) A judicial proceeding concerning a power of attorney commenced on or after October 1, 2016; and
(3) A judicial proceeding concerning a power of attorney commenced before October 1, 2016, unless the court finds that application of a provision of sections 1-350 to 1-353b , inclusive, 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of the judicial proceeding or prejudice the rights of a party, in which case that provision does not apply and the superseded law applies.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) An act performed by an agent under a power of attorney before October 1, 2016, is not affected by sections 1-350 to 1-353b , inclusive.