(a) Time.— This chapter applies to:
- (1) a fiduciary acting under a will or power of attorney executed before, on or after the effective date of this section;
- (2) a personal representative acting for a decedent who died before, on or after the effective date of this section;
- (3) a proceeding for the appointment of a guardian of the estate commenced before, on or after the effective date of this section; and
- (4) a trustee acting under a trust created before, on or after the effective date of this section.