This is a valid LONE4 (M was changed to L last year). Have you left HNL-JFK open intentionally? You could do a lot more with the LONE4 ticket: 4 flights inside Asia on Cathay Pacific, 4 flights inside OZ/NZ on Qantas, 6 flights inside North America with AA and 2 more flights inside Europe with AY/BA/IB/Aer Lingus.

I haven't been in contact with EMECO before, so I don't know if they understand that you can have open segments (segments without date).