I'm having problem with my tax liability reports. When I create an invoice AND apply a payment on the same invoice via my Pre-pay liability account the invoice becomes a zero dollar invoice IF the amount invoiced and amount applied are equal. That's OK on the surface. What isn't OK is when printing a sales tax liability report, all of those zero dollar invoices are also show zero sales. That is not right. How can I record a payment coming from my pre pay liability account that satisfies a particular invoice?