473.660.  Discharge of personal representative. — Upon the filing of receipts or other evidence satisfactory to the court that distribution has been made as ordered in the final decree, the court shall enter an order of discharge.  The discharge so obtained operates as a release from the duties of personal representative and operates as a bar to any suit against the personal representative and his sureties unless the suit is commenced within one year from the date of the discharge.  Nothing in this section shall be construed to change the effect of an order approving final settlement as provided in section 473.597.