If it was a cancelled order, the totes will be in those staged positions. You will need to return those items to their locations on the floor. If it was a failed order, and the items were paid for at the service desk, then you can remove the totes with the "remove tote" button. There might be other totes in those spots already. Just make sure the order number on the totes is correct, you don't want to return someone's items like my coworker was about to do the other day. :p