I probably did not state my question correctly.
After golive (upgrade) on all target systems (also production), we still have two transport requests (SPDD/SPAU) that are available on our development system. The content of these transport requests has already been imported on the target systems (also production) via the SUM tool during upgrade on the target systems. These transports were created on the shadow system.
These two transport requests have been released/exported on the development system, but have never been imported into the target systems. Which sounds logical as the content has already been imported via the SUM tool.
I would expect, to avoid issues/confusion, that we need to remove these transports request.