I have a single Magento install that hosts several stores, each with their own domain and catalog but under the same main brand.
What my client want's to achieve is a way for all the stores to share a single cart. For example; I add a product in store A and then add a product in store B. I could then checkout at either store A or B and pay for both products.
From the comments I gather this is working for most but for me things don't seem to change. If I add something to the cart in website A and then visit website B the cart is empty.
Hope you guys have some suggestions, thanks in advance!