CRM_COPY_BADI - Method: Pricing

Hi experts!

I'm trying to solve the following issue:

     When I create a Sales Order as followup transaction from another one, the field EXCH_RATE (Exchange Rate) of my new document has the      same value of the old order.

I need to update this field automatically with the actual Exchange Rate, so I used the BAdI: CRM_COPY_BADI - Method: PRICING to do this, however hte field is not being updated and I wouldn't like to enhance the BOL to set this field.

Any suggestion? Is there any setting in SPRO relationed with this field?

Thanks and regards.

Danilo Cardoso