Thank you for your reply!
Later, when others investigated, the following knowledge was lost:
・All the knowledge of “furniture” that I could remember in the Isle of Siptah’s vaults.
・Eldarium-Reinforced Chest.
・Eldarium-Reinforced Braziers.
・Hardened steel cage.
・Parchments.
From the game user’s point of view, it is not clear whether all of this is lost knowledge. There may be others.
Please investigate and respond.
thank you!