PV is not generated for the amount of Bella Bucks used. Purchases made using only Bella Bucks are not eligible for PV. (Business Supply orders never earn PV.) Using another form of payment with Bella Bucks on an order will still result in less PV earned.
Example: If an order normally generates 150 PV and you use $50 in Bella Bucks, you will generate 100 PV for the order.