All conversions showing "not set" for source/medium in Google Analytics

[farid]

We are having the same issue and I shared details here. All our data for shopify_app_install event is now looks Unassigned (not set)

[Bug] shopify_app_install event stopped sending attribution data to GA4

Shopify is using the GA4 Measurement Protocol to send shopify_app_install events. This problem occurs because ga_session_id, which is being sent to GA4 Measurement Protocol, is not the same as the user session ID. I recorded a video to show this problem. I also previously shared my findings in this Twitter thread. https://x.com/faridmovsumov/status/1921207830838755662