I have a site set up to require registration to purchase. However, when I test it, if I change my WordPress user information is does not change the information in the WordPress e-Commerce billing fields, nor vice versa. For example, right now the shopping cart thinks I am Franz Ferdinand and WordPress rightly understands that I am Mark Morgan.
I tried a fix from the Getshopped forums but it didn't fix this issue. I'm a little stumped.
Sorry I can't post a link to the site, it's all dummy text right now.