Supplier calendar is not honoured by ASCP Collections

Hi

We are in EBS 12.1.3. Here are the details on our issue

1. We are using Global ASL with   Supplier  capacity calendar setup in  Planning Constraints> Supplier Capacity Calendar.

2. Profile MSC: Buy Order Processing Lead Time Calendar is set up with  Supplier Capacity Calendar.

3. We have set up the Suppler Capacity calendar with  Exception dates say Supplier is  closed for 2 Months.

4.  Ran the ASCP Collection , but the  suggested due dates in ASCP is not honouring the  Supplier closure dates as set up in the supplier calendar.

Any help in this issue is appreciated.

Regards

Jagan