The buffs were taken off of them just before the skill system overhaul because most of them were buffing skills that won't be around anymore. The patch note (Oct 27) said they'll be redesigned and readded after the skill revamp:
Skill Buff duty officer assignments have been temporarily disabled. We are undergoing a massive revamp of the way Space skills work. Once this is complete, the skill buff assignments will be able to be added back in in their new forms.