Here's what you should do
The first step is to download all your data from EtherFlyer and import them into Koinly. There are a few ways you can do this:
- EtherFlyer does not have any API, so you will need to download your transaction files from their web UI and import them to Koinly yourself.
- If the above method(s) is not possible for you, you can also add the transactions manually through Koinly's web interface.
Note that if you decide to use CSV files, you must make sure to import your deposits/withdrawals and trades for ALL previous years - not just the current one!
That's it. The only other thing to keep in mind is to tag your airdrops/forks so they appear as Income on your final crypto tax reports!