by Jim » Wed Sep 19, 2012 8:04 pm
The minicart uses a cookie to keep track of product in the cart. Like any cookie on the web it can only be read by the domain that wrote the cookie. Since you shopping cart is at http://www.beeronthewall.com and the checkout screen is at https://beeronthewall.securesites.net they are on different domains so the cookie can't be read.
There is really no need for the mini cart on the checkout or thank you screens since they can't add anything to the cart at those places. If you are sure you want it there then the only way to get it there is to get a secure certificate for your domain, have in installed on the server and use it for the secure screens.