Scion of Legend trait ***possible bug***

[mlenehan1]

I'm playing a Witch in an upcoming Return of the Runelords campaign and I took the Scion of Legend trait and when I went to pick my skills it seems to have made ALL knowledge skills into class skills instead of just the two that I've chosen. I can't see anywhere in the traits description (see below) where this should have happened and when I deselect the trait the normal Witch knowledge class skill appear.

Scion of Legend
Source Return of the Runelords Players Guide pg. 11
Category Campaign

Your character has a personal link or association with one of Varisia’s established heroes. This hero should be a PC you played in a previous campaign (and could be, but need not be, one of the Sihedron Heroes). Your character could be a younger sibling, younger cousin, or even an apprentice of the hero. If enough time has passed, you might be the hero’s child, or your character could have reincarnated from the soul of a hero that died before your character was born.

Choose two skills for which your associated hero has skill ranks. You gain a +1 trait bonus on checks with both of those skills, and those two skills are class skills for you.

Once per adventure as a free action, you can call upon a previously forgotten bit of advice or lore imparted to you by the hero to gain an insight bonus equal to your class level (minimum +10) to a skill check. You may choose to apply this bonus after you roll the skill check, but must do so before the result of the roll is known.