Prepayment With Purchase Order

Thanks Tanya for the new link.  I went thru the pre-payment voucher options here, plus the logged voucher and the alternate payee option.  They kind of work but not one is perfect in this scenario.  Let's say we have to pre-pay a vendor with a credit card (AmEx or Visa).  We pre-pay the vendor when we issue the PO.  The payment to the credit card company is due in 30 days.  The receipt of the PO may be weeks after that. 

Option 1.  If we set the payee for that particular vendor to be AmEx, that causes problems if we pay with Visa other times.