The Previous rates tab is used to maintain exchange rate changes. If you change the rate on the General tab, a line with the new rate is created automatically on the Previous rates tab. Only one line is saved for every date; if the rate changes more than once a day, only the rate that was entered last on that day will be saved.
Using the previous rate for consolidation purposes
If a holding and its subsidiaries are using different currencies, exchange rate differences may be relevant during the consolidation process. It is possible to always consolidate using the corresponding rate. If you have the appropriate license, then the rate applicable on the first day of the consolidation period will be used. If you do not have a license, the current rate will be used.