ATP Check from Sales Order not exploding

Hi All,

I have a SO line for a make item which is scheduled today. A work order has been created with a due date of 09 Aug 2019. This is as per the item MFG LT and components availability.

Now when i try to do the ATP check on the same SO line, the ATP results do not explode the make item's bill so i can see the components availability. Instead it shows me that the make item is available on 09 Aug 2019 (because of the WO).

My expectation is that whenever i do an ATP check from a Schedule SO line, the ATP check will not consider that SO line demand and its pegged supply (the WO) as if the line was never there. It should show the ATP results with the bill exploded.