So we are trying out the Product Volume pricing rule for the first time online. We have setup everything properly we think because almost under every circumstance the pricing rule works. The only instance where the pricing rule does not work is on out TNEW page after an item has been added to the cart. If the promo code is entered first, then the pricing rule activates and changes out the price types when the minimum number of shows is met. However, if you select 3 qualifying shows first, and then enter the pricing rule on the cart page, it does not swap out the price types.
We know that the pricing rules have the ability to swap out price types from the cart and checkout page. We've been using them to do that since they were first implemented, but only for the Product Only rules. We do have a customization in place that runs from the LWP_Validate_cart procedure. I attempted to disable it on our Test site but still no luck in getting it to work. If anyone else has worked more with this rule type and can offer insight, that would be great.
FYI, we are on TNEW V7, in case that is a factor as well.