Here's what you should do
The first and usually only step is to download all your data from Cashierest and upload them to Koinly. There are a couple of ways you can do that:
- Cashierest 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 even add the transactions one by one via Koinly's web interface.
Note that if you want to import CSV files, you must make sure to import your deposits/withdrawals and trades for ALL years !
That's pretty much it. The only other thing to keep in mind is to tag your airdrops/forks so they show up as Income on your final crypto tax reports!