Your character has the following edges:
Barkskin of the Shady Elm: You better endure heat and cold with your bark skin.

#score damage
Slash : Normal Fire : Moderately resistant 20%
Cold : Moderately resistant 20% Lightning : Moderately resistant 20%

#barkskin
Your skin becomes tough like bark.

#aff
Skill: 'bark skin' modifies armor class by -76 for 51 hours.

#score damage
Slash : Normal Fire : Moderately resistant 20%
Cold : Moderately resistant 20% Lightning : Moderately resistant 20%

It was just implemented special like protection, instead of as a resistance, so it doesn't show up in score damage. Wouldn't be hard to switch it to the other way though, which would probably be better, I'll confirm with Daev.