4.2.1.3 Exchange Rates and Turnover Calculation
Media Campaigns have the following three fields which allow you to calculate the annual turnover for each account in you company currency:
- Exchange Rate
- Exchange Rate Advertiser
- Exchange Rate Agency
All three Exchange Rate fields get filled at creation of the Media Campaign or when the probability of the Media Campaign changes to 100%. In both of these situations the three Exchange Rates are filled with the current exchange rate which you have entered in the company  7.1.9 Currency Settings.  The Turnover Amount (converted) and Turnover Amount Net (converted) fields calculate the revenue using that exchange rate without showing the currency.
Manually entered values are not recognized. Also changes to the currency at a later stage are not getting recalculated.