I have a different issue. When any option other than the "popup" is used for the shipping address not being the same as the billing address, the billing address changes to the new shipping address and the checkmark on the "Shipping Address is the same as Billing is checked again. When I select the popup, it accepts the shipping address without changing the billing address. But, both addresses are showing up for each of the billing and shipping addresses. Said a different way, there are 4 address showing on the checkout page. This is extremely confusing. I am using it now on the website. But, I would hope to have a much simpler method of applying a different shipping address. The URL is nouvelle research.com.