Getting prompted for Volume License Key after imaging Sysprep'ed P

Our base corporate image for a certain model is out of date. I loaded it on
that model, ran all Windows and software updates, configured a new Default
Profile and used the following Sysprep.inf file to sysprep the machine. Note,
it was sent to us as a sysprep image:

[GuiUnattended]

OEMSkipRegional = 1

OemSkipWelcome = 1


[LicenseFilePrintData]

AutoMode = PerSeat


[Networking]


[Unattended]

InstallFilesPath=C:\sysprep\i386

OemSkipEula = Yes


[UserData]

FullName = "EndUser"

OrgName = "Our Enterprises"

ProductKey = "XXXXX-XXXXX-XXXXX-XXXXX-XXXXX"

I use the graphical Sysprep 2.0 tool and I set it to Reseal, run the
Mini-Setup and not to reset grace period for activation. Here is the
interesting part; it works without prompting for the Volume License number
while just running a test Sysprep and rebooting the machine but as soon as I
grab a copy of the updated Sysprep image (using Altiris RapiDeploy) before it
boots into MiniSetup, it reverts back to prompting for the volume license
number.

Any ideas why this may be the case? I am probably on my 12th time altering,
readjusting and working with the Sysprep.inf file. I even tried to recreate
it from scratch with Setup Manager and it still won't work.

Thanks.