problem in copying ORDER field from contract to sales order

Hi,

I have a problem with copying a field from quantity contract header to sales order header. That field is : "Order" in acc. assignment tab

Before, we had a modification to show order field in contract or sales order header. Now, when we create sales order with reference to contract, this order field from header isn't copied to sales order header.

I checked the copy control data (VTAA):

• Data T: 051 General Header Data
• Data T: 101 Header Business Data
• Data T: 001 Partner Header Data

I think we should modify routine but I'm not sure if there something else to do.

Does anyone have any solution to solve the problem?

Thanks in advance

Soma