Conditions in Purchase Order

Hello All,

Now i am creating Purchase Order for XXXX Material. In the purchase order I have mentioned some condition like fright, discount, VAT Etcu2026

Then I am creating one more Purchase Order with same vendor and material combination. In this purchase order all condition will come automatically from old purchase order.

We no need all condition types automatically from old Purchase Order.

Please advise me how I can control

Thanks in advance

Nagi Reddy