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I have three WordPress blogs installed in three different subdomains. Each one has its own design and content. I already migrated them from UA to GA4 with Google Site Kit. There is also a main (www) subdomain running Joomla, still with UA and I do not know how to migrate it.
I had a property with UA, and each subdomain was a view of it. Now, with GA4 each WP instance has its own property.
So, I need help for:
1- Is it possible to have all Analytics subdomain combined data in one place?
2- Is it possible later to discriminate data by subdomain, so I can learn which one is doing well?
3- Is it possible to install Google Site Kit in my main www domain with Joomla?