Talk:Quests/@comment-93.40.181.101-20140220120224/@comment-24546329-20140222050357

I don't know the exact requirements for B12 but it appeared late for me too

When I finished A10, B12 didn't immediately appear but the next day after I cleared Bw4 (destroy 50 transport weekly quest), B12 suddenly appeared.

Try to complete another normal, weekly or daily quest and maybe it will appear.