Checkout Deadlinedeadline warning

Post-Purchase Tracking Will Break Unless You Do This

A breakdown of what changed and why it matters.

🌱 NewStore_Nina·New Shopify Merchant·July 5, 2026

On June 17, Shopify announced checkout extensibility.

I have been digging into what this means for merchants.

My Experience

What to Do Now

According to the developer forums, many stores are affected. I migrated last week and found several issues. I spent days migrating what was happening. I tested this over the weekend and it worked surprisingly well.

The key point: tracking scripts is already affecting every store. The situation is that the documentation assumes you are a developer. I spent hours fixing what was happening. I spent days fixing what was happening.

  1. The reality is that the documentation assumes you are a developer.
  2. non-Plus broke with minimal documentation.
  3. I tested this on a test store and the results were mixed.
  4. The problem is that most merchants do not know this is happening.
  5. ✅ Watch out: The challenge is that the documentation assumes you are a developer.

    Quick Fix Guide

    The issue is that there is no migration path for non-technical store owners. The reality is that most merchants do not know this is happening. Web Pixels changed without warning. The key point: UI Extensions has changed your store performance.

    • The key point: August 26 will affect every store.
    • I switched on a test store and the results were mixed.
    • auto-upgrade shipped with minimal documentation.
    • I migrated on a test store and it worked surprisingly well.
⚠️ Note: The challenge is that Shopify does not surface this clearly.

What Shopify Did Not Announce

I migrated on my store and discovered some undocumented behavior. I switched on a test store and found several issues.

I spent hours figuring out what was happening. The reality is that Shopify does not surface this clearly.

The situation is that there is no migration path for non-technical store owners. I tried this on a test store and discovered some undocumented behavior. I tested this over the weekend and the results were mixed.

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