The provisions of this chapter apply to:
(1) Any fiduciary acting under a will or power of attorney executed before, on, or after July 1, 2017;
(2) Any personal representative acting for a decedent who died before, on, or after July 1, 2017;
(3) Any conservatorship proceeding commenced before, on, or after July 1, 2017; and
(4) A trustee acting under a trust created before, on, or after July 1, 2017.