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# Migrating from Shopify Scripts to Shopify Functions

# Migrating from Shopify Scripts to Shopify Functions

## Overview

Shopify Scripts have been fully deprecated: editing/publishing Scripts stopped on April 15, 2026, and **all Shopify Scripts stopped executing on June 30, 2026**. If any of your UpsellPlus discount automations still rely on Script Editor, they are no longer applying at checkout. Migrate to **Shopify Functions** now — Functions are modern, require no coding, and work directly within UpsellPlus.

## What You Need to Know

Shopify Functions replace Scripts with:
- No custom code required--configure entirely in UpsellPlus
- Better performance and reliability
- Native checkout integration
- Support for shipping discounts (Scripts limited)
- Future updates and improvements

## Migration Steps

### 1. Find Scripts-Based Offers
- Go to UpsellPlus -> **Offers**
- Click **Edit** on each offer
- Check **Discount Settings** for "Shopify Scripts" indication

### 2. Document Current Settings
- Note discount type (percentage, fixed amount, BOGO)
- Record discount value
- Note scope (cart, product, or collection)
- Any conditional Smart Rules

### 3. Switch to Functions
- Click **Edit** on the offer
- In **Discount Settings**, select **"Use Shopify Functions"**
- Re-enter discount type, value, and scope
- Configure any Smart Rules
- Click **Save**

UpsellPlus automatically creates and registers the Function with your store.

### 4. Remove Old Scripts
- In Shopify admin, go to **Settings** -> **Apps and sales channels** -> **Script Editor**
- Find each UpsellPlus Script
- Remove or deactivate it if still present
- This prevents any conflicts with your new Functions-based discounts

## Testing Your Discounts

1. Add the upsell product to your cart
2. Proceed to checkout and verify the discount appears
3. Calculate: expected discount matches actual discount
4. Test with different products eligible for the offer
5. Check Shopify admin **Order** -> **Discounts** to confirm

## Troubleshooting

| Issue | Solution |
|-------|----------|
| Discount not appearing | Verify offer is active, Smart Rules are met, cache cleared, and the offer is set to use Shopify Functions (not Scripts) |
| Wrong discount amount | Recheck discount settings match your documentation |
| Discount stacking changed | Functions stack with codes and other Functions; test and adjust as needed |

## Need Help?

- Email support@upsellplus.com with your store URL and issue
- Click **?** in UpsellPlus for in-app help