When I exported the data, I got 169 rows of net P/L values, which is correct.
and here is the results on excel:
and as you can see, excel is saying $545 and Protrader is saying $499. The column that I calculated the sum for was the net P/L, so this column is taking into account the fees and etc. Also, Excel says 170 because the very first row was used to label the columns and the rest are just 169 values that are used to calculate the sum.
Thanks for engineering Protrader.