I am trying to redeem for an ANA reward from HKG-NRT/HND on Feb 12 (I am booked on the 11th as a backup, but actually need to travel on the 12th). On the ANA website, there's availability (on the partner search) for both economy and business:

NH1906 HKG-KIX 03:10-07:25
connecting to NH144 KIX-HND 08:35-09:45

I called Continental to see if they can book me on that flight, but the amazing thing was that the rep says he cannot even pull up the NH1906 flight - on either his award system or the regular revenue system - even after I provided exact flight details for him

The flight does show up on the ANA timetables as a weekly additional flight between HKG-KIX - is there any reason why Continental is unable to even see the flight?

The rep hinted that it might be a "special" flight to reposition aircraft given it's late flight time, but why would it be listed on the ANA timetable and be bookable on ANA's website? But he didn't seem too sure either.