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:
Doombringer class should have following skills: Rush Impact, Soul Roar, Scorn, Soul Barrier
Maestro class should have following skills: Polearm Mastery, Armor Crush, Battle Cry
Maestro class should NOT have following skills: Rush Impact, War Cry(not involve in trading skills)
Titan class should have following skills: Armor Crush, Rush Impact, Battle Roar, Bandage
Dreadnought class should have following skills: Polearm Accuracy, Power Crush, Rush Impact, Battle Roar, Provoke, Earthquake, Detect Animal Weakness, Detect Plant Weakness, Eye of Hunter, Detect Dragon Weakness, Detect Beast Weakness, Eye of Slayer
Grand Khavatari class should have following skills: Rush Impact, Force Meditation, Force Barrier