The look and feel of the Currency/Exchange Rate step has been updated, along with calculations to reduce the amount of data entry needed.
Now you only need to enter each exchange rate conversion to your default (i.e. the first column); the system then uses this data to calculate the remaining cells. For example, if you tell the system GBP to AUD and NZD to AUD, the system can work out GBP to NZD.
This will reduce the amount of data entry and any mismatch of rates.