Norton Ghost 15 Backup on Windows 7 x64 with BitLocker Enabled

Dear Norton Ghost Support:

 

After successfully creating a backup of my Windows 7 OS, I had to provide a recovery key when my PC was rebooted.  And in order to resolve the issue of supplying the recovery key for every boot, I had to turn off BitLocker and subsequently turn it back on. Can you explain what modifications Norton Ghost made during the backup process which forced the recovery key at startup?

 

Thanks,

 

Norton Ghost 15 User