Price diffrence in VA02 and VA03 for a Sales Order

Hi Sap Gurus ,

We are facing a peculiar Problem in Sales Order . We have created a Sales Order , Delivery and Invoice . Once we go back to check Sales Order we found that there is no similarity between the Pricing in both Display ( VA03 ) and change mode ( VA02 ) .

For a perticular condition type in display value is correctly picking but in change mode same condition type is getting picked wrongly but in Invoice the value is updating correctly .

Please let us know is some one faced the same problem and get the solution for the Same .

Usefull answers will be awared accordingly.

Thanks in advance .

Ganesh sagar