I entered a bill in December of 2018, but didn't pay the bill until January of 2019. When I run the P&L for 2019, it still shows the bill as open in the unapplied cash bill payment expense on the P&L. When I run the P&L report for 01/01/18 to 04/12/19 it no longer shows up as unpaid in the unapplied cash bill payment expense.
I've come to share some clarifications with you about the bill is under the Unapplied Cash Bill Expense account on the P&L report.
This account shows up when you've sent vendor payment checks but not yet applied to a vendor bill. This can also occur when a bill is create for a credit card account balance. If an incorrect amount is showing in this account, you'll need to apply the bill payment to a bill dated before the bill payment.