New disks on Protected members

We've got 30 physical servers protected by DPM.

We are about migrate to a new 3PAR.

This means that existing servers (not the DPM-servers themselves of course) will have both their bootdisk as well as their data-disks copied to a new LUN, provisioned from the new storage.

Since DPM use change block tracking, Im guessing that a datamigration plan using robocopy will cause all the files to be treated as new, causing the recoverypoints to be maxed out beyond our resources.

Any ideas how we can copy files to new disks and keep the journaling?

Ivarson