I basically have the same questions as you have regading the transport management of the Extractor setup. I can't imagine that the only way is to open each system landscape in order to create the logical systems and extractors... Same problem if i need to change something (add fields fir i.e.): do I need to modify 3 times, in test, quality and prod?
If any of you guys have some experience to share on that...
you exactly got my point. But it works exactly as you described. You have to perform the settings in every system and therefore you have to open the respective system changeability (TA: SCC4). In our current client setup it's already impossible so create logical system in quality system to restrictions regards changeability set in SCC and this will be the same in production environment.
I think this has to be changed that it works like usual SAP customizing that is transport via standard transport management.