(1) An act done before the effective date and any accrued right is not impaired by this subchapter. If a right is acquired, extinguished, or barred on the expiration of a prescribed period of time that has commenced to run by the provisions of any statute before the effective date, the provisions remain in force with respect to that right.
(2) Any rule of construction or presumption provided in this subchapter applies to accounts established before the effective date unless there is a clear indication of a contrary intent.
(3) The rights of a party, beneficiary, or creditor in an account established before the effective date of this subchapter are governed by the law applicable before the effective date for a period of one year after the effective date and thereafter are governed by this subchapter.