I have come across this issue while running the MRP. I am not sure if this is how MRP is supposed to work. Our client is running an MRP for a item with the following:
In stock: 9
Required Quantity :35
When MRP is run with the required quantity it come up with a recommendation for a quantity of 26. What is expect the system to do is take the PO for the 99 as something that should fulfill the required quantity of 35.
I really think this seems to be a bug.