s11s

<http://www.example.com|www.example.com> and <http://blog.example.com|blog.example.com> were configured on different GA accounts?

no. it was with different UA ids in same account

if you want to retain the setup, its easy to do in GTM

*.<http://example.com|example.com> IMO should be on one property

haanji. will dm tomorrow and seek help from you

In the same GA property you can create a separate view for your new sub directory

i think he has been tracking the subdomains on separate property and wants to retain the tracking history/analytics

btw if you are not on GA4, I would suggest creating a GA4 property for all