External links have a "ga-ft" cookie parameter being appended to the URL

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I'm working with a site - https://www.graduatehotels.com/cambridge/around-town/ - and whenever you click an external link, there is a "ga-ft" cookie being appended to it on the other website. For example, the first "see menu" buttons lands me on this - https://www.greeneking-pubs.co.uk/pubs/cambridgeshire/eagle/menu/?_ga-ft=1XkY5P.0.0.0.0.WeI99N-1OvM6OI.0.1

I need to know how to prevent this from happening. I'm very attuned to cross domain tracking and have that set up just for the two URL's we need. This external link thing is throwing me off.

In this past I've heard "ga-ft" is a Google Analtyics 4 cookie, is that correct?

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1 Answers

Just go to GTM and disable the linker. Or remove the domains you don't want to link your corss-domain tracking with.

But this will result in you having different client ids for users moving from one site to the other. It will make it much more complex to trace user journey across domains.

You can implement cross-domain linking on the backend in case all backends in question can communicate freely and set correct ga cookie.

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