I don't understand your question. In CCC there is a Source field and Destination field, choose the drive with the backed up data in the "SOURCE" and choose the drive you want to transfer the information to in the "DESTINATION".
CCC is one of the best software out there. It does what it says no issues, continuous updates, responsive support from developer, and great guides on their site for anything you need to do. Can't get better than that. For saving you digital life, the asking price of $40 is very measly amount.
The only other software I know that works in the same way is SuperDuper but I don't trust that one, seems sketchy and not as PRO as Bombich(CCC developer).
I've used the paid version of SuperDuper for around 30 years without any problems. Excellent software and support. Just as much PRO as CCC.