That's great! Well, I have learned something. Sorry for giving incorrect/incomplete information then.View attachment 205398
It seems fine to me, I'm able to select the seats on the business class cabin too. This is a domestic only ticket at the moment but I am looking to add some to my oneworld classic in the future. I've had several calls with an agent and one them said he could see the availability but best that I call back within 3 months of the trip before booking it. He claims that tickets for JAL domestic flights will expire in 3 months that's why.
It will be interesting to see how you go adding them to your Oneworld award in future - I hope that works out for you too. I will have to give it another go with Qantas if you can do it.. I've got two domestic JL bookings currently as Y in my otherwise all J booking right now for August.