- Deprecate `returnRefund` mutation and `Return.suggestedReturnRefund` field; introduce `returnProcess` mutation and `Return.suggestedFinancialOutcome` for unified return handling
- `returnProcess` consolidates disposition decisions and financial processing, and exchange fulfillment orders are only created when exchange line items are processed
- Apps must migrate from `returnCreate`, `returnApproveRequest`, `refundCreate`, and `returnRefund` to the new `returnProcess` mutation; new APIs are in the unstable version and launch in API version 2025-07