9 Days After Shopify Scripts Died (What Broke and What Did Not)

Shopify Scripts died at 12:01am UTC on July 1, 2026. Nine days later, the ecosystem has stabilized but the migration wave is still finishing. Some stores handled the cutover perfectly. Some are still running fallback apps to buy time. A small number are running Frankenstein checkout flows they will need to unwind in August. This is the honest post-mortem based on what we saw in our client base and heard from Indian and global Plus merchants across the week after Scripts ended.

What actually broke at 12:01am July 1

The cutover itself was clean at the platform level. Shopify did not have an outage. Checkout did not go down. What happened was targeted, per-store, and predictable based on each merchant's migration state.

Stores that had migrated all Scripts to Functions before June 30 saw zero customer-facing changes. Every discount, shipping rule, and payment customization continued firing correctly. These stores had a boring, uneventful cutover.

Stores that had not migrated saw exactly what the deprecation notice predicted. Scripts stopped executing. Discount rules that depended on Scripts silently stopped applying. Shipping methods that Scripts had been hiding started appearing. Payment methods that Scripts had been reordering reverted to default order.

The customer impact was measurable but not catastrophic. Missing discounts meant customers paid full price. Misordered shipping methods sometimes led to wrong selections. But nothing broke the ability to place an order.

The stores that were completely fine

Roughly 70 to 80 percent of Plus stores we track ran clean through the cutover. Characteristics of the fine stores:

Migrated in April, May, or early June. Enough runway to load test Functions under production traffic before the deadline. No surprises.

Had simple Scripts that mapped cleanly to Functions. Percentage discount by customer tag. Free shipping over threshold. Simple Buy-X-Get-Y offers. All of these have clear Function equivalents.

Worked with a Shopify Plus Partner agency for the migration. Not a coincidence. Agencies that had done multiple Function builds knew where the edge cases hid.

Ran full-week checkout QA in the last two weeks of June. Every discount stack, every customer segment, every payment method tested. Anything unexpected caught before July 1.

The stores that had issues (categorized)

The remaining 20 to 30 percent had issues ranging from minor to significant. Three categories:

Category 1: Late migrators who deployed Functions in the last week. Rushed testing. Edge cases missed. Typical issues: wrong discount stacking, unexpected free shipping triggers, payment method reorders that broke UPI flow for Indian customers. All fixable within days, but painful for the affected days.

Category 2: Merchants who used bridge apps instead of migrating. Discount app or checkout extension apps that promised to replace Scripts without a proper Functions migration. These generally worked but with feature gaps versus the original Script behavior. Most of these merchants are now planning a proper Functions migration for August or September.

Category 3: Merchants who did nothing. Small number, mostly stores where the person who wrote the Scripts had left the company and nobody else knew what they did. Their Scripts stopped firing. Their promotions stopped applying. Some caught it in a day. A few did not notice for a week because their customer service team had not flagged missing discounts. These stores are the walking wounded.

The bridge apps that saved late migrators

A subset of Shopify apps positioned themselves as Scripts replacements in Q1 and Q2 2026. These apps used Checkout UI Extensions and Functions under the hood but presented a merchant-friendly UI for setting up common discount patterns.

The apps that worked well included Shopify's own automated discount builders (which shipped as part of Spring 26), several Plus Partner-developed discount apps, and a handful of long-standing checkout apps that had built Function-based replacements.

The trade-off with bridge apps: monthly subscription fee versus the one-time cost of proper Functions development. For stores with 1 to 3 simple Scripts, the app path is usually cheaper long-term. For stores with 5+ complex Scripts, custom Functions development pays back within 12 to 18 months compared to app subscriptions.

Functions adoption in the first week

Shopify published Functions adoption metrics for the first time in the week after Scripts ended. Our observations from the Indian Plus ecosystem suggest similar patterns to what Shopify reported globally.

The Function types that saw the most adoption: Product Discount and Order Discount (nearly universal among migrated merchants). Shipping Discount (widely used but with configuration complexity). Delivery Customization (adopted by merchants who used Scripts to hide shipping methods). Payment Customization (adopted by merchants who used Scripts to reorder payment methods).

The Function type that saw less adoption than expected: Cart Transform. Cart Transform is the most powerful Function type but also the most complex. Merchants who used Scripts for cart bundling or split logic are still figuring out the Cart Transform pattern, and some are using bridge apps in the meantime.

What Shopify did well

Credit where earned. Three things Shopify handled well through the deprecation:

The 24-month runway. The deprecation was announced in June 2024. Merchants had two years to migrate. Nobody can credibly claim they did not see it coming.

The Functions documentation and tooling. The Shopify CLI, the Functions preview command, and the deployment flow all worked reliably in the final months. Documentation was comprehensive.

The Partner support during migration season. Shopify Plus Partners had direct escalation channels to the Shopify Functions team during May and June. Complex edge cases got triaged and resolved fast.

For the technical playbook merchants ran through, our original Scripts migration playbook covers the 4 paths that most stores followed.

What Shopify could have done better

Also honest observations from the merchant side:

The Cart Transform documentation was thin until late. Cart Transform is the most complex Function type. The documentation deserved more attention earlier in the deprecation window. Merchants who used Scripts for bundling patterns felt the pinch here.

The migration guide was Shopify-centric. The official migration guide walks through Function types cleanly but does not address the many app integrations that depended on Scripts. Merchants often discovered these dependencies mid-migration.

The final week communication was minimal. Given the scale of the deprecation, Shopify could have sent explicit reminder emails in the final 7 days with specific store-level status: \"you have 3 active Scripts that will stop firing on June 30.\" A few merchants who missed the deadline said they simply did not track the calendar.

The lessons for the next deprecation

Shopify will deprecate something else eventually. When they do, the lessons from Scripts should apply:

Start migration at the announcement, not near the deadline. The stores that migrated in Q4 2025 had six months of production learning before Scripts ended. The stores that migrated in June 2026 had days.

Do not rely on a single developer. The stores that got caught unprepared usually had one developer who wrote the Scripts and nobody else who understood them. Document what your custom checkout logic does. Distribute the knowledge.

Load test the replacement. Development environment testing is not enough. Functions or whatever the replacement is must be load tested at 5 to 10 times peak traffic before the cutover.

Have a rollback plan. Even with clean testing, cutovers can produce surprises. Know your rollback options before you need them.

What actually happened when Shopify Scripts stopped working?

At 12:01am UTC on July 1, 2026, Shopify servers stopped executing Scripts across all stores globally. For stores that had migrated all Scripts to Functions before the deadline, nothing changed - Functions continued running the same business logic that Scripts had run. For stores that had not migrated, the specific behavior depended on what the Scripts were doing. Discount Scripts stopped applying discounts. Shipping Scripts stopped modifying shipping methods. Payment Scripts stopped reordering payment options. Checkout continued to work in all cases - orders could still be placed - but any custom business logic that depended on Scripts was silently removed. Customer service teams at unprepared stores started seeing tickets about missing discounts within the first 12 hours. Most were resolved through manual credits while the merchant scrambled to deploy Functions replacements.

How many Plus stores migrated Scripts on time?

Our observations across Indian and global Plus merchants we track suggest 70 to 80 percent of Plus stores had all Scripts migrated to Functions before June 30. Another 10 to 15 percent had bridge apps installed as temporary replacements while planning proper migrations. The remaining 5 to 10 percent were caught unprepared and lost custom checkout functionality on July 1. Shopify has not published official adoption metrics as of July 9, 2026, but is expected to include them in the next Investor Day disclosure. The migration rate was materially higher than the 2023 Checkout Extensibility migration, which suggests merchants and agencies learned from that transition and started earlier this time.

Can I still use Shopify Scripts after June 30?

No. Scripts are fully removed from the Shopify platform as of July 1, 2026. There is no fallback mode, no legacy support period, and no way to continue running Scripts. Any merchant still needing the functionality Scripts provided must implement equivalent logic through Shopify Functions, Checkout UI Extensions, third-party apps that use Functions under the hood, or manual admin workflows. For merchants who missed the June 30 deadline and need the fastest path back to working custom logic, our checkout extensibility guide covers the four layers of what replaces Scripts and how to move quickly.

What is the safest way to migrate a Script after the deadline?

Three-step approach for late migrators. First, install a bridge app that replicates the Script functionality within 24 hours. This is a temporary bandage but stops the customer-facing bleeding. Second, engage a Shopify Plus Partner agency to build the proper Function replacement. Budget 2 to 6 weeks depending on Script complexity. Third, run the Function in parallel with the bridge app for 2 weeks of validation before turning off the app subscription. This pattern gets you back to working functionality fast while ensuring the long-term implementation is correct. Trying to build the Function from scratch under time pressure without a bridge app usually produces bugs that take longer to fix than the sequential approach.

What is the biggest lesson from the Scripts deprecation?

Do not rely on a single developer for critical business logic. The stores that got caught unprepared almost universally had one developer who wrote the Scripts and nobody else who understood them. When that person left, was on leave, or was not available during the migration window, the Scripts became institutional knowledge that was slowly lost until the deadline forced the reckoning. The technical lesson matters less than the operational one. Custom checkout logic - whether Scripts, Functions, apps, or manual workflows - needs to be documented, understood by multiple people, and reviewed regularly. If your business depends on it, treat it like production infrastructure.

Will Shopify deprecate Functions in the future the same way?

Eventually, yes. All software platforms deprecate old technologies as they build new ones. Functions is Shopify's current answer for custom checkout logic, but the platform will evolve. What we can predict from the Scripts pattern. Shopify gave 24 months of runway for Scripts and clear migration paths. The next deprecation will likely follow similar patterns. The merchants who plan for eventual technology evolution as part of their operations budget avoid emergency migrations. The merchants who assume current technology is permanent get surprised. Functions will run for years. It will not run forever. Plan accordingly.

What we would tell a merchant still catching up

If you are reading this on July 9, 2026 and still have unmigrated Scripts or unresolved post-cutover issues, here is what we would do this week.

Day 1: Audit what is currently broken. Compare July orders to June orders. Look for missing discounts, unexpected shipping charges, and customer service tickets flagging price discrepancies.

Day 2: Install a bridge app or manual admin workflow to restore the missing functionality. Buy yourself time to plan the proper migration.

Day 3: Get 2 to 3 Shopify Plus Partner agencies to quote the Functions migration. Compare scope, timeline, and price. Sign with the one that matches your urgency.

Day 4 to 7: Communicate with any customers who were affected by missing discounts. Issue credits or refunds where fair. Reset customer service scripts to handle the transition period.

Week 2 onward: Execute the Functions migration cleanly. Do not rush it because you already rushed the initial response. Take 4 to 8 weeks and build it right.

The stores that catch up cleanly in July will be stronger than they were in June. The stores that keep patching without a real migration will spend the rest of the year fighting checkout issues. Choose the harder short-term path for the easier long-term one.

If you need help catching up on your Scripts migration or auditing what broke, we are running expedited Functions engagements for merchants who missed the June 30 deadline. Email us at hello@exactwhy.com and we will respond within 4 hours.