Shopify Scripts deprecated sharing what I learned migrating to Functions

Shopify Discussion
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Posting this because I saw a few threads here asking about Shopify Scripts breaking after June 30, so figured I’d share what I found out while migrating my own store’s scripts over.

Quick context for anyone who missed it: Shopify Scripts are officially retired now. If you had custom scripts running for discounts, shipping, or payment rules, they’ve stopped working (or will soon), and the replacement is Shopify Functions.

Why this actually matters

It’s not just “an app broke.” The scripts were usually doing real work a BOGO rule, a bundle discount, a shipping condition, a checkout customization. When they stop running, that logic just silently disappears. Sales don’t apply, checkout reverts to default, and most merchants don’t notice until a customer complains.

The migration itself is the hard part

Shopify Functions are genuinely more powerful than Scripts, but they’re built for developers you’re looking at the Shopify CLI, writing extensions in Rust or JavaScript, testing locally, then deploying. If you’ve got an in-house dev or an agency, that’s a normal Tuesday. If you don’t, it’s a real wall.

A few paths I looked at:

Hire a developer / agency to rebuild each script as a Function works, but costs add up if you have multiple rules to migrate
Learn just enough Function development yourself doable but slow if discounts/checkout logic isn’t your day job
Use one of the no code function builder apps that have come out specifically for this migration this is what I ended up doing, mainly to avoid touching code for every single rule

Went with the third option for my store (there are a couple of no-code function builder apps in this space now the one I used worked fine for migrating my discount and BOGO scripts without writing anything myself), but the honest answer is: pick whatever path matches your comfort with code and how many scripts you actually need to move.

If you’re still on old Scripts

Worth checking sooner rather than later the risk isn’t really “will it break,” it already has. It’s more about how much revenue logic you’re currently running blind without.

Happy to answer questions if anyone’s stuck on a specific script type (discounts, shipping, payment) dropped a comment below with a bit more on how I approached mine.

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Good writeup, and the “silently disappears” part is the bit people underestimate. Two things I’d add from doing a few of these migrations:

  • Functions fail quietly too. A Script that stopped running at least became visible once a customer complained. A Function that’s deployed but whose conditions don’t match just doesn’t fire, and nothing errors. So after you migrate a rule, don’t trust that it’s live because it deployed. Test it with a real cart that should trigger it and one that shouldn’t, and confirm both outcomes. The no-code builders will happily deploy a rule that never actually matches.

  • “Migrating your scripts” is usually more than one job. Discounts, shipping, and payment logic are three separate Function types (discount, delivery customization, payment customization). A lot of the no-code builders only cover discounts and BOGO, so if your old Scripts were also reordering payment methods or hiding a shipping rate, that part can still be broken after the discount piece is done. Worth writing out everything each Script actually did before you assume you’re covered.

And if you saved the old Script code anywhere, keep it. Once a Script is retired it’s easy to lose the reference for what the logic was really doing.

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Hi @sophia24,

Your store’s discounts or shipping policies might no longer be functional because Shopify deprecated the previous “Scripts” capability. This can be resolved with “Shopify Functions.”

Go to the Shopify App Store and look for apps in the “Discount Builder” or “Function Builder” categories.

Select an app: Launch a program that is compatible with “Shopify Functions.” You may replicate the same rules (BOGO, volume discounts, delivery regulations) with these apps without the need for coding.

Set up rules: Recreate your previous script logic in the app’s UI.

Thanks!

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A lot of merchants underestimate how much critical checkout and discount logic was running through Scripts until something stops working and customers start noticing. Migrating to Shopify Functions early is definitely the smarter move rather than waiting for revenue impacting issues to appear.

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i actually migrated my store over to Shopify Functions using Nexus Functions Creator, and it completely saved me from the developer wall you mentioned. The visual, no-code setup made rebuilding our discount logic incredibly straightforward.

To echo what @syed_noor said, the point about thorough testing is absolutely crucial—even with a great no-code tool, you still need to verify your edge cases in the cart to ensure the rule triggers exactly when it’s supposed to. If anyone is stuck looking for a solid path that handles discounts, payment rules, and shipping adjustments without having to dive into the Shopify CLI or Rust, I definitely recommend giving Nexus a look.