Basic Dates in Production order

Hi All,

I am facing an issue with Basic dates in Production order, Finish Date and Start Date are 1 day difference,

Here is the scenario, my Finish date 03/09/2016 Start date 03/08/2016, Question here is Production order did not consider Routing Hours which i have maintained 14hr that means two days, so Start date should be 03/06/2016.but system is showing 03/08/2016. Production order i am creating through MRP Planned order to Production order.

Material Master Settings ( In-house days  7 / GR processing 1 / Schedule Margin key release period 5 )

Please kindly help me out in this issue. If anyone came across this issue.

Thanks in advance.

Pushpala