Rescheduling horizon at 999

Hello, we set our rescheduling horizon at 999 days for the correct MRP group in configuration, however when we run MD04, the date of 12/24/2018 did not reschedule. It should have pulled it in. We put the date of 12/24/2018 as a test to see if it would pull it in to within the 999 days, but it did not. What else could be causing the problem?  Everything in the material master looks fine.

Thank you.