There is an mabiguity with regard to the limit of controllable Undead.
Specifically, it is not stated toward which abilities/spells are affected:
"" wrote:
Necromancy School
Specialist Bonus: You can control 8 HD worth of undead
creatures per caster level. If you prepare spells of your
opposition schools, excess undead immediately become free-
willed and do not return to your control when you regain this
bonus. You choose which undead are released.
However, the power does not state which spells or abilities are affected:
- Channel Negative Energy (1 HD/level)
- Control Undead spell (2 HD/level)
- Animate Dead (4 HD/level)
Regards,
Ruemere