Not sure what you're getting at there. The unique Borg officer abilities are Traits, like Efficient. Those are never upgradeable and are never visible on the skills page. That includes the ones that bestow an activated attack; Vulcans can get a nerve pinch ability, for instance, but it's not upgradeable, and neither is the Borg attack trait.
Incorrect. There are activated abilities Borg BOs ahve that do not display correctly. Borg Nanites and Neural blast among them. They appear as activated abilities on my borg's stat page but under the skills page it lists normal engineering abilities.