HPDM seems to ignore Task Deferment

Hi,

I'm attempting/preparing to push out a build to our T620 fleet.  I have explicitly configured a 'Task Deferment' task with custom message.  I put this task at the very start of my task sequence.

When I push out the Task Sequence, I advise it to execute regardless of the write filter status, and I put a check in the box to 'Defer task before reboot or shutdown devices'.

However, I'm never prompted to 'Postpone' or 'Reboot'.  The device simply reboots and begins building.

HPDM 4.7