In order to export transaction history for EtherDelta follow these steps:
Note that if you're using CSV files to import your transaction data to Koinly, you must make sure to import your deposits/withdrawals and trades for ALL previous months/years - not just the current one! Koinly needs your complete EtherDelta transaction history in order to calculate your crypto taxes accurately.
We have lots of helpful resources if you're having issues with your EtherDelta CSV file: