Extracting Data from Different Source System

Hi,

We have a data source in BW which is pointing to Source System in QA Environment SCQ. We stopped using source system SCQ long back as we are moving away from SAP.

Now I would like to point the same data source in BW QA system to pull the data from Production.

How can I do that other than creating the new source source system in BQ QA system.

Please help.

Regards