The QB Expense Ref allows you to see and edit where EFT data is going to in QuickBooks.
Look in the drop down list and select, if the item is NOT there just type it and then go to the QB mapping as shown below.
Do NOT forget to use the Dropdown refresh to see all the different QB accounts that you can choose from and also to view the new Expense Desc. You just added.
This item will now be ready to post to QuickBooks.