Hi Friend,
My understanding is that though you upgraded your Ghost Server , the bootimage you use is still the same which you created with Ghost 8.x . I would advice you to go ahead and create a fresh boot image with the help of your upgraded ghost server.
Tips for the best output :
Since you have a fresh upgraded ghost Server at your end, you need to ensure that you have got the updated NIC/Storage drivers added to your WinPE. If you have an active support contract with symantec, get in touch ith the support technician to add all latest drivers for m ost common NIC cards and storage controllers.
Regards,
Dilip Sebastian