Weapon/Attack skill level wrong when actor has no skills

[sdJasper]

Set up:

1. Created a character in GCS with a weapon
2. Created empty actor in Foundry, imported GCS actor
3. Created empty item and drag weapon from actor. Adjusted skills, parry, etc as needed (In this case the skill was "S:sling | DX-6"
4. Created NPC actor with no skills

Reproduction Steps:

1. Open NPC character
2. Go to items tab and drag item into NPC sheet
3. Notice Weapon table list the weapon with a skill of 12
4. Add skill to the NPC (any skill)
5. Notice Weapon skill updates to correct skill or default

Expected results: Weapon should use the default value