yeah no clue how that happened, its probably because of the history of this booking. Was trying to book it via ORD 2 days ago and system crapped on me ( its a 4 PAX booking). I called the agent and gave them the card id where the system crashed. She checked and told me that the fare is gone but there is availability on LX 9 out of ORD. She did some magic, and booked me LX 9 for 80K Vs 88K as norma for partner flights.
Today I saw this routing showing for 80K and called to change ( because 800PQP is better than 87 PQP .. she changed it and this is what I have.. so I think YN/JN was when the last agent booked me on LX doing whatever she did!.

Anyway thanks for the replies, hopefully SDC works!