I've got several clients who use GA and a hosted ERP/ASP platform. When a user starts the checkout process, they get redirected to checkout.otherdomain.com. I'm not able to follow the GA help directions about adding JS code to track clicks/forms from one domain to another, due to template restrictions.
It seems like an easy solution (one that has worked with an expensive analytics package) would be to override the default visitor ID with one from the ASP, which tracks the visitor properly between domains. Is there any way in GA to do this?