Price of a item is not getting defaulted from latest quotation attached to ASL

There are two quotations for an item for same supplier. Both quotation has different effective dates and both the quotation is attached to ASL.

Now when creating PO for the same item-supplier combination, Item price is getting defaulted from the previous quotation even though the need by date is falling after the effective date of new quotation.

Pl help me to resolve this.

Thanks in advance.

Regards,

Manoj Saxena