Triggering beginRefundRequest only calls v2 server notifications and not v1

Hey, we've added two endpoints for receiving AppStore Server notifications. One for v1, and for v2. While testing the flow, we've triggered beginRefundRequest() on the client. And we realised that we do get notified on our v2 endpoint. But when we updated AppStoreConnect with our v1 endpoint, and selected to receive v1 notifications. Calling beginRefundRequest() doesn't trigger the the v1 notification at all. Is this expected? Will calling beginRefundRequest() only trigger v2 notifications and not v1?