Yorn and Feiton 'Abyss Trade' vendors missing

The vendors who let you exchange Abyss crafting materials for jewelry or ability stones are missing in both Yorn and Feiton. I had someone check on the server in KR and they do exist but were left out for some reason here. This mean that any leftover T2 Abyss Dungeon materials are wasted

Please fix this ASAP