What is Impact of ITP 2.x for Adobe Analytics.

What is Impact of ITP 2.x for Adobe Analytics.
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I was read that:
https://medium.com/adobetech/safari-itp-2-1-impact-on-adobe-experience-cloud-customers-9439cecb55ac
https://webkit.org/blog/8311/intelligent-tracking-prevention-2-0/
https://webkit.org/blog/8613/intelligent-tracking-prevention-2-1/
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Report Date:Mar 21 2019 - Jun 18 2019
I was examine [visits] and [ [User ID](Custom eVar)] by safari browser.
It looks like Continues to be measured for over 7 days without delete cookies.
Is it a difference by safari browser version?