So my Diaymo was wounded by a ninja. He was max level and had the % bonus to his unit (i had tweaked this variable slightly). Before he was wounded his bodyguard was 77 men. The default is 48 men before the 6 star buff. After he was convalesed, his unit went down from 77 men to 48 men. He still has the talent but now has a reduced unit count.

Is this a known bug?