Hi there, @casa3.

Since the memo details that you've entered in the bill doesn't reflect the bill payment window, we can reenter them instead.

The only information that reflects from bill to bill payment window is the Payee, Bank/Credit account, Mailing address, Payment date, Ref no., and the transaction itself. This is the reason why the memo details don't reflect when printing the check.

In addition, you can run the Bill Payment List report in QuickBooks Online. This way, you can check the bills that you've paid in QuickBooks. Just go to Reports and look for Bill Payment List report.

Don't hesitate to tag my name in the comment section below if you have other concerns or questions. I'm always ready to help.