PO price got changed after MASS change
We have created a PO on 31.03.2008, at the time of creating the PO the material price is 3.14 USD in the info record. But we changed the PO shipping instruction by running MASS change on 26.07.2008, the material price at that period is 3.54 USD. After the MASS change the PO price also automatically got changed, it picks the current price in the info record by the time we changed the shipping instruction by running MASS transaction.
In the info record we found four different validity periodsu2026..
Please advice me how we can stop this problemu2026.