During the migration project from IBM Tivoli Storage Manager V5.5 to V6.2 some nodes are already protected in the new system by initial backups. In the old system historical data of these nodes already exists and should be moved to the new system. What is the best way to do this?

A.
Export / import the old data to the new system.

B.
Keep the old system up and running as long as needed.

C.
Restore the old data from the old system to a temporary work area and perform a backup to the new system.

D.
Export the old data to sequential media and put the media into a vault until it is needed for restore purposes.