no Chinese localized content in locales_quest/ locales_item_set_names table

Hi there

I find that in the latest TDB release (335.59) there are no Chinese localized contents in the table locales_quest or locales_item_set_names?

Chinese localized contents are available in loacles_broadcast_text, locales_creature,locales_gameobject, locales_item. However there are no such localized strings in locales_item_set_names and locales_quest.

Is this a known issue? Or did i miss something?