Each conservator shall account to the court for administration of the conservatorship upon resignation or removal and at other times as the court may direct, but if not otherwise directed, the conservator must, at least once in three years, account to the court. If the conservator shall die before making the accounting, the conservator's personal representative will make the accounting, or if no personal representative has been appointed, the sureties on the conservator's bond may proceed to make the accounting. On termination or removal of the protected person's minority or disability, a conservator shall account to the court or to the formerly protected person. An order after notice and hearing allowing an intermediate account of a conservator is a final adjudication as to liabilities concerning the matters considered in connection therewith. Thereafter, at any time prior to final settlement, the account may be reopened by the court on motion or petition of the conservator or ward or other party having an interest in the estate for amendment or revision if it later appears that the account is incorrect either because of fraud or mistake. An order, following notice and hearing, allowing a final account is a final adjudication as to all previously unsettled liabilities of the conservator to the protected person or the protected person's successors relating to the conservatorship. In connection with any account, the court may require a conservator to submit to a physical examination of the estate, to be made in any manner the court specifies.