I think you misread my issue.
The instructions state to use this command for UEFI systems in BCDBoot mode:
setup.exe /ConfigFile "%SystemDrive%\Users\Default\AppData\Local\Microsoft\Windows\WSUS\SetupConfig.ini"
This is supposed to work because the file contains the the ReflectDrivers path that tells Windows how to handle encryption.
Here is the contents of SetupConfig.ini on a system running previous versions of Endpoint Security:
[SetupConfig]
ReflectDrivers="C:\Program Files (x86)\CheckPoint\Endpoint Security\Full Disk Encryption\Driver"
ResizeRecoveryPartition=Disable
DynamicUpdate=enable
After upgrading to 82.30.0530 though the SetupConfig.ini file is completely blank. This means that Windows no longer knows how to read the data on the FDE encrypted drive and fails the Feature Update.
There were versions about two years ago where the path was incorrectly entered with \\ in the path instead of \ which broke it too.
The file content just seems to be a consistent oversight in build QC.