Missouri Tax due paid on-line

You cannot pay MO from your federal refund.  

Your state tax due cannot be paid from your federal refund.

It is not possible to pay your state tax due from your federal refund, nor is it possible to pay a federal tax due from a state refund.  The federal and state treasuries are completely separate from each other.  You may have seen a TurboTax summary of your federal and state amounts that confused you into thinking one was “paying” the other.  It is not.  If you have federal tax due you can pay by mailing your payment with the 1040V voucher, having the payment taken out of a designated bank account, or you can pay directly on the IRS website.

https://www.irs.gov/payments/direct-pay

You must pay your state tax due using the state’s preferred method of receiving payment.  For most states that will be by making a payment to the state’s own tax website, or by mailing a check or money order.

https://ttlc.intuit.com/questions/1900884-what-are-my-options-for-getting-my-state-refund-or-for-paying-any-state-taxes-i-owe

TT does not update after your return has been accepted.  Your account will always show the result of the return you prepared using the software.  TurboTax never knows if you received your refund —or if how, or when you paid tax due.  Your proof that you paid your tax will be your own bank/credit card records.