Hello,
I'm trying to migrate my GA setup from GTM to Launch. To ensure a smooth migration, I decided to set GA via Launch on a test GA property first.
So I have both Launch and GTM set up on my website. Each of them is currently running a GA setup. The setups are functionally identical but reporting data to two different GA properties.
I noticed that the Launch-powered GA property is consistently reporting fewer pageviews than the GTM-powered GA property. Even if I narrow down the comparison to one single page, and compare day by day, via Launch I get on average 1.5% fewer pageviews than via GTM.
I know that these figures cannot perfectly coincide because network requests sometimes fail.
However, it seems to me that the 1.5% gap is a bit too big.
What is even more alarming is that it's always Launch reporting smaller figures. So the reason seems to be in Launch, and not in some random network issues.
Do you have any idea as to why this may be happening and how to fix the Launch setup?
Thanks.
PS. To implement GA in Launch I use the extension Google Global Site Tag (gtag) by Acronym. Both of my GA properties are GA360 properties (so it's not a sampling issue).