Using Google Analytics to track the same session in client javascript and server side tracking calls?
We are implementing a 3rd party payment system into our site (Barclays CPI). We want to use Google Analytics to track where paying customers came from eg; keywords, email campaigns etc. However, the Barclays CPI returns the payment authorisation result via a server-to-server http request, not a normal web page with google analytics code. This breaks the analytics chain, we lose the client cookie that identifies the visitor.