Mo. Rev. Stat. § 33.195: Proceeds of unpaid check returned to fund and appropriation on which drawn.

If a warrant or check in payment therefor cannot be delivered or if the commissioner of administration finds that, for any reason, the warrant or check cannot legally be paid, the amount thereof shall be removed as an encumbrance against the appropriation and allotment on which the warrant is drawn and appropriate entries shall be made on the general accounting books to restore the amount of the warrant or check to the fund on which it is drawn and to the appropriation and allotment thereof.