Hi,
You really should look at Link2Points as your solution to pay vendor invoices with credit cards. Go to www.link2systems.com and you can see that module and all of our other solutions that integrate with Adagio. Actual link is http://www.link2systems.com/link-to-points.

The Link2Points as a software add-on module for Adagio, was designed exactly for the purpose you are trying to do. You and many other sites were looking for a solution to pay vendor accounts with credit cards to maximize your credit card loyalty points, and then use regular payments in AP to pay the credit card vendor.

If you would like to see a web demo, please call your dealer or ourselves. We would be glad to show our solution to you.

Best,
Brian