Combining sales order as 1 single planned order

Hello Members

I am having 2 sales order of 100 pcs and 50 pcs with same requirement date.I am using strategy 20 and lot sizing MB and avl chk-01.As per my understanding if we use MB then requirements for a month get clubbed.So MRP run should output a single planned order for 150 pcs at the start of the month.But in my case it is giving 2 separate planned orders.Do i need to maintain any other settings?Please refer the screenshot.