I was able to solve my problem. There are two 'Boot Disk Creator' programs. One that is installed with GSS and one installed with the Ghost Standard Tools. While I did know this, I didn't realize there was a difference. I have been using the one provided with GSS which much be assuming that you'll be using a shared folder/tasks/etc for image creation/deployment. The one provided by the GST is not making this assumption.
Regardless, the process now works with Windows 10, UEFI, prompting tech for IP, etc.
Thanks to those who assisted.
Eddy.