Backup and Restore part of the registry

We have created an update disk for our existing devices. It works well but devices have some specific calibration data on the registry and all are lost after the a full backup restore using production programming tool.

Before a production programming (master copy) , i would like to backup some part of the registry (device specific calibration data) and restore it on the my master production programming backup?

Can i implement it such a scenario?

You can use a regedit tool which is included in OS image to save or restore part of registry. You can do it interactively (File->Export|File->Import) or by CLI. Type regedit -? at WinCE Start->Run for details.