Migrate from legacy to unified

One-click migration from legacy per-type discount functions to the unified function.

This article is a draft and may be incomplete or change before publishing.

If you installed Oxify before unified function support shipped, you have legacy per-type functions running. Migrate to the unified function to avoid the 5-function-per-cart limit and get cleaner stacking.

How to migrate

Open Settings → Discounts → Migrate to unified function. The migration:

Reads all your legacy auto-discounts.
Recreates them as a single unified function call.
Deletes the legacy auto-discounts.
Reports any failures.

Idempotent

Running the migration twice is safe. The script detects already-migrated discounts and skips them.

What gets migrated

Free gift reward tiers
FBT offers
Volume discount rules
Cart upsells

What doesn't change

Manual discount codes you created in Shopify admin (those aren't Oxify-managed).
Other apps' discounts (untouched).
Customer-facing experience — the cart looks identical before and after.

After migrating

Test in an incognito window. Confirm a sample cart still gets the expected discounts.