WooCommerce USPS Shipping Version 5.5.7 Changelog
* Fix – Declared value set on a parent variable product now applies to all variations that don't have their own value set.
* Fix – REST API order metadata (rate description and mail class) saved from the wrong USPS service — now scoped to the selected rate.
* Fix – REST API multi-package rates now record each package's rate description and mail class under an index-suffixed key instead of the last package overwriting the rest.
