Call the CLCP for your category. The scheduler works with and for the CLCP. If you get no help (unlikely) then call Ed S. Missing a graduation for an OE is stupid. The planner can swap a couple of pilots around with minimal fuss.

After it's been fixed at a lower level, send an email detailing the scheduler's intransigence to Ed S. The scheduler needs a little more light to shine on his cubicle.