Cross Domain Tracking - Google Analytics Tracking Issue on Web Forms redirect

Hi Guys,

I have an issue with forms. I have implemented Infusionsoft web forms on Landing pages on my website, and chose to redirect people to a thank you page (On my website). I have set up some goals on the thank you page and I started driving traffic through Social Media on my landing pages. I have noticed though that all goal completions are assigned as refferal from na683.infusionsoft.app instead of let’s say facebook.

Is there any way to implement cross domain tracking in order to keep the traffic source data on my google analytics? If not, is there any other hack that you guys are doing for this?