We've been using iTMSTransporter for years to upload achievements in bulk to AppStoreConnect. This week we've been unable to update the achievements of an existing app. The iTMSTransporter log reports success, it even gives an upload_id, but the data does not seem to be processed and is never reflected on the AppStoreConnect list of achievements.
Are we missing something? Was this deprecated recently? Is this just a server side error? Any pointers welcome. Thank you.