Added support for exporting Discount Codes

You can now export Discount Codes from the Merchant Center. With this enhancement, you can now backup and archive Discount Codes or migrate them to another Project by importing the Discount Codes.

Previously, this feature was only available in ImpEx. With the added support in the Merchant Center, you have greater convenience as it eliminates the need to switch between different tools.

This feature is available only for Projects in Google Cloud Regions.