YouTube tracking external traffic from Infusionsoft emails

Hey friends,

Since appr Jan 2019 traffic from Infusionsoft to our YouTube account has dropped in times.
In YOuTube analtyics we look at External Traffic and specifically for

Now these numbers decreased dramatically once no other changes were made.
Anyone has same experience?
Could it be INFS uses different redirect link system, so it is not being recorded by traffic recipient?

Appreciate your feedback, thanks!

It could be a number of things related to their change. I would get in touch with support and ask them to view their logs for specifics to find out what they have or have not recorded on your behalf.