Heal and Skill Unlock from Unchained

[Moveenar]

Has there been any clarification regarding the skill unlock language for heal from Unchained? I've pasted below and 10 Ranks does not specify anything about healing ability damage. It looks like that it is likely a printing/editing error but does anyone have additional info?
Thanks.

With sufficient ranks in Heal, you earn the following.
5 Ranks: When you treat deadly wounds, the target recovers
hit points and ability damage as if it had rested for a full day.

10 Ranks: When you treat deadly wounds, the target
recovers hit points as if it had rested for a full day with
long-term care.

15 Ranks: When you treat deadly wounds, the creature
recovers hit point and ability damage as if it had rested for 3 days.

20 Ranks: When you treat deadly wounds, the target
recovers hit point and ability damage as if it had rested for
3 days with long-term care.

[Weirdo]

As written, it only affects HP.

Given the effects of the other unlocks (and the relative power of the ability) I would say it's likely that ability damage is intended to be included.

[dragonslie123]

If you look at the actual healing rules,

this unlock is rather weak and is very confusing,

unlock one -

you actually lose out on the wisdom bonus and heal the same amount, you do get to do ability damage though.

unlock 2 -

4 hp per level yes please,

unlock 3

the healing actually turns into 3 hp per level...(what happened? am i missing something...)

can anyone explain if this stacks or over laps with the heal skill?