When I apply a vendor credit to a bill in billpay, it applies and looks right. then when I go to schedule payments... IN MELIO the vendor credit does not carry thru..??

I'm here to ensure this issue gets investigated, useroau.

I'd suggest contacting Melio's customer support team to further check the root cause of why the vendor credit isn't properly applied. They’ll be able to investigate the transaction and share steps to resolve the issue.

Here's how:

1. Head to the Melio support at this link. 
2. You'll see the contact details of the app under the App information section.  

Aside from the steps above, you can also connect with them using the Help button on the bill payment screen:

1. From the bill payment screen, click the Help option to display the Frequently asked questions window.
2. Select the green bubble icon Start a chat. 

For more details about vendor credit, please see this article: Enter a Credit from a Vendor.

Additionally, I'd recommend visiting our Expenses and vendors page.  From there, you can read some of our helpful articles that will guide you in completing your future tasks. 

In case you'll need assistance in applying for vendor credits, don't hesitate to get back on this thread. We're always here to help you. Have a good one.