Hi there, @Amycao.
Thank you for providing us with the details and adding a screenshot of your concern in QuickBooks.
The overdue amount from your vendor's open balance came from the recurring journal entry you've made. Since you're using Accounts Payable (A/P), the system will automatically take that as a liability to your vendor. This is the reason why your overdue under Vendor A is $139,000.
Moreover, using this entry won't offset the amount you've paid for the expense.
If you want to properly record this transaction into QuickBooks, I'd recommend reaching out to your accountant. That way, we can ensure that your books are accurate.
For now, you can delete the recurring entries you've made and start a new one instead.
To know when to use bills, checks, and expenses in QuickBooks Online, check this article here.
If you have more questions, please feel free to leave a comment below. We'll get back to you as soon as we can.