Mo. Rev. Stat. § 436.465: Record-keeping requirements of seller.

A seller shall maintain:

(1) Adequate records of all preneed contracts and related agreements with providers, trustees of a preneed trust, and financial institutions holding a joint account established under sections 436.400 to 436.520;

(2) Records of preneed contracts, including financial institution statements and death certificates, shall be maintained by the seller for the duration of the contract and for no less than five years after the performance or cancellation of the contract.