AbleCommerce Shopping Cart Software

I wonder if someone can comment on how Able passes basket and user context into checkout page when separate URL is used? For example, I fill my basket up at store.domain.com, and click "checkout", which takes me to secure.domain.com. Also, I assume that secure.domain.com needs to be added into the Able license for this to work. Is there additional cost for that?

Thanks,
-Nick

Any help here? This is a challenge for me; the redirect must be somewhere in the CommerceBuilder API, which I don't have source for, and I can't test without buying the extra domain first.

I can look in the source code if you tell me exactly what I am searching for-- some terms.

Maybe the store setting field that holds the secure url: SSLEncryptedUri?
Or possibly one of the two members exposed by StoreSettingCollection class - EncryptedUri or UnencryptedUri? Wherever those get implemented or also possibly where the <securePages> section from ablecommerce.config is parsed.

Thanks for looking. I'm guessing that some token is passed in the querystring to identify the origin user and then User.Migrate is called, so that might be another thing to look for.

-Nick