Tax Reports does not use historical currency rates

I am using Reckon Accounts Personal Plus 1015 Release R 1. I have created a “Tax Schedule” and a “Income Tax Summary” reports.

The report brings through the correct transactions. However, any transaction that uses currency is brought in based on the current currency rate instead of the currency rate at the time of transaction.

For example: I have a investment transaction (Dividend) of **** 800.00. When I entered this transaction Reckon asked me for exchange rate information (lets assume 0.8) which equates NZ$1,000. NZ$1,000  is correctly displayed in my reckon NZ bank account. However, when I run the NZ tax report and todays exchange rate is 1:1, Reckon says this transaction is now NZ$ 800. However, for tax purposes I need to show $1,000.

How can I create last’s tax report if the report will keep changing every time the currency is updated?

FYI - I did try to add historical currency information but that did not work either