I have group pricing installed on version 1.3.9h and everything installed and displays correctly except shipping.

My products go by a percentage of the retail price for shipping. Well in the group pricing it is figuring that percentage based off of the new discounted price - I still need it to figure it based on the regular retail price.

What do I need to do to fix this?

I am using the shipping by zone option as the percentage is different for different areas.

I really need to be able to use this add on - please help fix my shipping issue.