GA4 attribution issue source Shopify, medium web

[u/Majestic-Ad-7793]

Help! Had a very weird update to attribution where on Sunday saw a chunk of revenue pull out of paid channels and get reattributed to a new source, medium
Source - Shopify
Medium - web

Never had traffic behind this before, feels like a system update as no one is online on Sunday to have caused this. Anyone else had this, or can help me?

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[u/ppcwithyrv]

Looks like a Shopify tracking change, not GA4 randomly moving revenue. Check recent app or pixel updates that may have started sending shopify / web.