Mo. Rev. Stat. § 376.1080

If an insurer uses the services of an administrator, the payment to the administrator of any premiums or charges for insurance by or on behalf of the insured party shall be deemed to have been received by the insurer, and the payment of return premiums or claim payments forwarded by the insurer to the administrator shall not be deemed to have been paid to the insured party or claimant until such payments are received by the insured party or claimant. Nothing in this section limits any right of the insurer against the administrator resulting from the failure of the administrator to make payments to the insurer, insured parties or claimants.