Hello fellow webmasters,
So I have successfully set up cross domain tracking using tag manager and getting the unique clientId cookie data to be passed via URL parameter and seeing users convert in a funnel, fun stuff!
I have to implement this to a few sites, first of all, the site I got this working on referred to the second domain name with a regular
Here is the tricky part where one of you might be able to help. The other sites I'm implementing this in have opt-in forms which after you submit then refer you to the second domain using InfusionSoft's email system. Because of this, Google's tag manager is not passing the _GA cookie data in the URL therefore creating a brand new session. Which causes my goal funnel to not convert through the steps.
Any idea or input on how this could be solved simply, without creating a second landing page after opt-in with a button telling users to click?