Why would they drop them? They are probably still selling more than many artists in the Japanese musical landscape. Just because they are selling less in th 4846 grand scale doesn't mean anyyhing. They should indeed learn that April - July is going to be dangerous sales-wise, but with so many SG it's hard to fit 10 singles in the remaining 9 months. I doubt AKS cares much about the SG sales as long as they have the numbers to fill in for AKB releases.