Practical stuff about Shopify data tracking. No fluff.
Shopify does not track tag changes. Not in the timeline, not in the API, not anywhere. Here is how to actually solve that.
When a metafield changes from "gold" to "silver", the old value is gone. Shopify does not keep history. Here is why that matters and how to fix it.
Shopify tracks some things. It ignores others completely. Here is what falls through the cracks and what you can do about it.
You tagged 200 customers as VIP last month. Now half of them are gone. Nobody deleted them. Nobody remembers touching them. Here is what actually happens.