Only one production order with multiple lines when use MTO (make to order)

Hi

When i use manufacturing policy in item/SKU card as MTO(Make to order) & if i plan multiple level production orders then system (NAV 2009 R2) will plan only one production order with multiple lines.

But same scenario did on NAV 2013,

It planned same thing but deference production orders.

Any one note that situation? is it improvement in NAV 2013?