How do I post a payment to an AP just paying down account not attaching it to a specific invoice?

Hi ddmgibson3-gmail,

It's a pleasure to see you in Community.  Welcome!  QuickBooks Online provides a variety of ways to record your transactions with peace of mind.   With that being said, it's best to speak to your accountant for the best course of action when paying down an account in QuickBooks Online.  If you don't have an accountant, we can help you locate a ProAdvisor in your local area by following this link.

If any other questions come to mind, please feel free to reach back out.  We'd be happy to help!