Hi ​@Kavitha Jayaram 

I don’t have much familiarity with the GA4 migration, but for your use case you will need to have atleast one of the trial click event ingested in Amplitude to initiate the funnel analysis.

You could either set up a GA4 import for those critical clicks events in Amplitude (https://amplitude.com/docs/data/source-catalog/ga4 ) or setup event forwarding if that fits your SDK instrumentation ( https://amplitude.com/docs/migration/migrate-from-google-analytics

 

---

If using GTM, I would set up a javascript variable to get the Amplitude session id, then send that as an event property with your GA4 event(s)

---

Hello Kavitha,

Hope you are well!

Amplitude and GA4 currently does not have an integration where it can map users together. Amplitude uses a combination of User IDs, Device IDs, and Amplitude IDs to track unique users. To ensure accurate user mapping, make sure that your instrumentation aligns across both platforms. You can learn more about how Amplitude identifies users in our **User Identification Guide****:****https://amplitude.com/docs/get-started/identify-users**.

That being said if you can keep the Device ID and/or User ID the same between GA4 events and Amplitude events then our system will see them as the same user. If you're using the Browser SDK there is ways to set/retrieve the Device ID and set a User ID. These could be tools you can leverage to set in GA4 events or set GA4 IDs as User or Device ID in Amplitude. Documentation: https://amplitude.com/docs/sdks/analytics/browser/browser-sdk-2#custom-device-identifier.

Hope this helps!

-Eddie


P.S. Checkout upcoming events and user meetups on our events page.

---