Section 3–503. [Supervised Administration; Effect on Other Proceedings.]
(a) The pendency of a proceeding for supervised administration of a decedent's estate stays action on any informal petition then pending or thereafter filed.
(b) If a will has been previously probated in informal proceedings, the effect of the filing of a petition for supervised administration is as provided for formal testacy proceedings by section 3–401.
(c) After receiving notice of the filing of a petition for supervised administration, a personal representative who has been appointed previously shall not exercise the power to distribute any estate. The filing of the petition shall not affect other powers and duties unless the court restricts the exercise of any of them pending full hearing on the petition.