Section 30-3-601 - Discharge and effect of discharge(1) The obligation of a party to pay the instrument is discharged as stated in this chapter or by an act or agreement with the party that would discharge an obligation to pay money under a simple contract.(2) Discharge of the obligation of a party is not effective against a person acquiring rights of a holder in due course of the instrument without notice of the discharge.En. Sec. 3-601, Ch. 264, L. 1963; R.C.M. 1947, 87A-3-601; amd. Sec. 150, Ch. 410, L. 1991.