Hi
Looks like it will be an on-going requirement, wherein, you will have to transport only selected Objects from one environment to another.
It's a recommended practice to break-up the ETL Objects and Reporting Objects and transport them in individual TRs. This gives better Control and easy management of transports from Dev -> QA -> Prod.
There are many documents around Transports on the net, just google. One of them is.. http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/d04c8c3c-40bf-2e10-139a-f7c5cd6e617b?overridelayout=true
Hope this helps.
Cheers,
Chandu