When a character Awakens they must trade in their old class’s skills for the Awakening class’s skills, more information here:
http://www.lineage2.com/en/game/patc...eplacement.php
But I found that some following classes are missing mandatory skills for trading when they want to learn 4th skills. Besides, they have redundant skills that they should NOT have:
Shillien Templar and Eva's Templar classes should NOT have Shield Stun skill
Phoenix Knight class should NOT have Sanctuary skill.
Eva's Templar class should have Divine Aura skill.