Originally Posted by Happy

For JL inventory, I believe some new government rules have made the award seats now are not bookable further than 6 months out. I dont remember whether it is for all JL award seats.

In any case, you can sign up a BA FF membership and use BA award booking engine to search for the availability - this would be more reliable than use JL's own because JL's may make more awards available for its own members while what BA sees should match with what AA sees.