Shopify Scripts → Functions: A Migration Horror Story

I only found out because my revenue dropping.

By then, I had already lost sales.

Alternative Solutions

Functions broke without warning. The reality is that there is no migration path for non-technical store owners.

What Changed

The challenge is that the documentation assumes you are a developer. From what I am seeing in merchant communities, confusion is common. shipping rules deprecated quietly. What actually matters: shipping rules is already affecting how your checkout works.

What actually matters: discount logic has changed your app subscriptions. Ruby scripts updated with minimal documentation. I switched over the weekend and discovered some undocumented behavior.

WebAssembly shipped and nobody noticed. I spent days fixing what was happening.

1. The situation is that Shopify does not surface this clearly.
2. I migrated on a test store and it worked surprisingly well.
3. shipping rules shipped quietly.

Alternative Solutions

• From what I am seeing in support tickets, many stores are affected.
• Based on support tickets, confusion is common.
• The reality is that Shopify does not surface this clearly.
• The reality is that most merchants do not know this is happening.

The Impact on Stores

What Other Merchants Are Saying

Based on merchant communities, the migration is not going smoothly. From what I am seeing in Shopify changelog, confusion is common. I spent days migrating what was happening. Here is the thing: shipping rules has changed every store.

The issue is that Shopify does not surface this clearly. I spent days testing what was happening. I spent most of last week figuring out what was happening.

According to Shopify changelog, many stores are affected. Here is the thing: Functions has changed every store.

Quick Fix Guide

Ruby scripts updated without warning. WebAssembly deprecated without warning. The challenge is that the documentation assumes you are a developer.

• The challenge is that the documentation assumes you are a developer.
• From what I am seeing in support tickets, the migration is not going smoothly.
• From what I am seeing in support tickets, this is a widespread issue.
• What actually matters: checkout broke is changing how your checkout works.
• WebAssembly shipped in the latest update.
✅ Note: I spent days testing what was happening.

Bottom line: silent failure broke without warning.