Hello, pbrandy1229,
  

I’d be happy to help you remove a closed sales order from the sales report.

We just need to make sure the sales order is completely closed. On your sales report, double-click the sales order to open, then click Mark As Closed on the upper part.

A Closed message will appear on the side, which will be the indication that it's completed. You can re-open the sales report to confirm the closed sales order is no longer showing.

Please don’t hesitate to reach us again if you have other questions.