Q1)
Set 130907 to new item's start date ,set 130906 to old item's end date.
or
In BOM,A new item is registered and an old item is deleted, and set new item's start date to blank.
In this way,All the data that is not actual input is updated.
Q2)
How to cut , the remain 33pcs of the new P/No:81409686-003-PA.
Procedure.
1)Schd.Qty of the old item is changed in the withdrawal detail screen.
2)New item is inserted in the withdrawal detail screen.
Please see the attached file of an operation image.