It would be better to use a sales receipt, and use items you create for the income as well as the expenses.
line one - an item which posts the gross amount to income
line two - an expense item which posts to the expense account with the qty set to a negative one, and the amount entered
line three and beyond the same as line two, each with a different line item
QB is not designed to use journal entries, they often do not work as expected and do not show on some reports
