What i have learnt is Dish tv is moving some channels like Food first from NSS6 to AsiaSat 5 because of making free space in NSS 6, because they know if they make new premium channels available in NSS6, the viewership of those channels will increase, because still many SD subscribers are not aware and many of them are not willing to spare extra money for a monoblock LNB...
Indian viewership is more economical than technological, everybody wants less expenditure, so what i learnt from my dish tv care centre is that SD subscribers are not willing to change to monoblock lnb. So currently dish tv is making transponders of NSS 6 free by moving less viewed channels from NSS 6 to AsiaSat 5. That is the reason why Food first was moved to AsiaSat 5, and for ur kind info many less viewed channels will be transited to AsiaSat 5 as per my sources.