It's completely ridiculous that this does not work. After many discussions over live chat, we discovered that price rules DO NOT WORK AT ALL using the new invoice style. I got them to work on the old style. But now, I can't revert back to the old style invoicing anywhere so they don't work anymore. When will price rules work using the new invoice style? In effect, this feature is now completely useless and broken. Please stop sending all of us form answers; this feature simply does not work.