Posting zero dollar invoices from sales update

On occasion, a sales order will be entered to send sample material to a customer. The order is comprised of detail lines to show the material and quantity being sent. The price on all of the lines is zero. When the order is invoiced, a zero dollar open receivable is created on the customer's account. I'm looking for a way to prevent the receivable from being created. If there is no way to prevent it, I would like the zero dollar invoice to be written with a paid status right away.

I was initially directed to the Journal Entry MBF (P0900049). There is an option there to omit zero amounts. I tested this, but my zero dollar invoice is still created. The notes on this option say the amount and units must be zero, so I assume because I have a quantity, this disqualifies the order from being excluded.