Converting Multipule Reqs to a Purchase Order with Delivery Schedule Lines

Question

Is it possible to convert a multiple Purchase Reqs for the same items to a PO that has one line but multipule deliver dates in the Schedule lines - Where the Purchase Reqs have been generated by MRP
Example
I have an SAP Contract 46***** that runs via MRP and creates 3 Reqs for item number 12345. All from the same vendor
             Req 1 delivery date 2/4/10  QTY 50
             Req 2 delivery date 6/4/10  QTY 20
             Req 3 delivery date 10/4/10 QTY 30
Aim is to have 1 PO with line 1 having a QTY 100 but the Delivery Schedule Tab to show the three seperate delivery needs
            date 2/4/10  QTY 50
            date 6/4/10  QTY 20
            date 10/4/10 QTY 30
Any Help?

Answer 1

When i try that the QTY in line one does not alwasy update to the total qty of the reqs and infact the qty on the req doesnt always appear in the schedule line....
This works for me perfect, I never encountred that the item quantity was not updated if I added a new requisition to the schedule.
ME59N should work, do not select per requistion and per delviery date in the New PO section in the selection screen. But set a flag into box create schedules.