Global report suite pages using both App Measurement and Web SDK
I have a global report suite where domain 1 uses the AA & ECID extensions on its pages and domain 2 will be migrating to Web SDK. The visitor can move back and forth between sites (and pages) during the same visit. What happens to the ECID visitor count in this case? Will we see inflated visitor numbers between the sites (with the ECID set twice) or will the Web SDK implemented site automatically see the ECID from app measurement pages?
Ideally, it would be best to migrate both at the same time but we can't at the moment due to time constraints.
Thanks
Mark