Some XP rewards when recommending to use the XP lamp on invention do not change the XP reward to the lower value for Elite Skills. For example, mysterious statues grant 10,000 XP for normal skills but only 5,000 XP for invention. Despite this, project tenacity recommends [Invention: 10,000]. (Side note: lamping invention seems like a very bad idea either way.)
Some XP rewards when recommending to use the XP lamp on invention do not change the XP reward to the lower value for Elite Skills. For example, mysterious statues grant 10,000 XP for normal skills but only 5,000 XP for invention. Despite this, project tenacity recommends [Invention: 10,000]. (Side note: lamping invention seems like a very bad idea either way.)