MO Rev Stat § 404.731 (2021)
2021 Missouri Revised Statutes|Title XXVI - Trade and Commerce|Chapter 404 - Transfers to Minors — Personal Custodian and Durable Power of Attorney|Section 404.731 - Jurisdiction of probate division of circuit court — guardian or conservator ad litem appointed, when.

Effective - 28 Aug 1989   404.731. Jurisdiction of probate division of circuit court — guardian or conservator ad litem appointed, when. — 1. The probate division of the circuit court may hear and determine all matters pertaining to acts and transactions of an attorney in fact performed or undertaken under a power of attorney on behalf of a principal who is disabled or incapacitated, or who has become deceased.  2. The provisions of chapter 472 apply to judicial proceedings involving powers of attorney to the extent that they apply to judicial proceedings involving trusts and are not inconsistent with sections 404.700 to 404.735.  3. If the probate division of the circuit court appoints a guardian or conservator for a principal who has appointed an attorney in fact under a durable power of attorney, after notice and hearing, the court may specify in an order the powers, duties and responsibilities of the principal's legal representative and any attorney in fact appointed under a durable power of attorney and the manner in which they shall coordinate the exercise of their respective powers and duties for and on behalf of the principal.  4. Upon filing of a petition under sections 404.700 to 404.735, the court shall issue an order to such persons and returnable on such notice as the court may require, to show cause why the relief prayed for in the petition should not be granted and, in due course, shall proceed to grant such relief as the court finds to be in the best interest of the principal.  5. Notwithstanding any other provision of law, if it is suggested in a petition filed by the principal, a creditor, a person interested in the welfare of the principal, or other interested person, including a member of the principal's family who may have a property right or claim against or an expectancy, reversionary or other interest in the estate of the principal, or if it affirmatively appears to the court that the principal is disabled or incapacitated and there is a possible conflict of interest between the principal and the attorney in fact, the court may appoint a guardian or conservator ad litem to represent the principal in any proceeding to adjudicate any right affected by the possible conflict of interest. The guardian or conservator ad litem shall have only such authority as is provided in the order of appointment and shall serve until discharged by the court.  6. If a court appoints a guardian or conservator ad litem for the principal, the court may, by order entered in the proceeding, provide reasonable compensation and reimbursement for expenses for the guardian or conservator ad litem and, in appropriate cases, allow the payment out of the estate of the principal or enter a judgment for the amount as costs against some other person who is a party to the proceeding and whose conduct is determined by the court as giving rise to the necessity for the appointment of the guardian or conservator ad litem. ­­-------- (L. 1989 H.B. 145 § 15)