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Or at least I don't (see my prediction percentage for proof of that)
For his purposes that's all he really needed to know. He sent Yuri there with the 12th there to essentially get in the 12th into enough trouble that Crombell would be able to pass him in the Union pecking order. The fact that he was ultimately killed was an unexpected bonus. Now that the Elder was killed though, I expect he wants to find out what is who or what did it, and how he can exploit that further.
He's figured out that there is some sort of powerful person knowledgeable in human modification but that's probably about all he knows; and I suspect he very little of what's actually in Korea beyond that. Considering Seira was such a surprise to everybody (including Yuri).