If you look at your achievements for duels you will see a lot of different entries, for, say reach duel level 300 and reach duel level 400 instead of just the one lowest incomplete achievement and a "expand group" for seeing the lower level completed achievements like reach duel level 200 as is the case for most tiered achievementsDuel achievements
Some duel achievements were not added to expand groups. The problem was solved.
can you explain this one?