Hi there, uniquepools.
Journal entries won’t affect the balance in the Sales tax page. To mark this balance as paid, you'll need to record the payment in the Sales tax page directly. Also, it’d be best to delete the Journal Entry to avoid duplicate transactions in your accounts. Just open the Journal Entry, click More at the bottom and select Delete.
For additional information about tax filing, please check out this article: https://quickbooks.intuit.com/community/Sales-tax/File-sales-tax/m-p/261654
Please know that we’re always around to help you, so don’t hesitate to visit us again.