Here's what you should do...
The first and usually only step is to download all your data from Bittylicious and upload it to Koinly. There are a couple of ways you can do that:
- Bittylicious does not offer an API, so you will need to download your transaction files from their web UI and upload them to Koinly yourself.
- If the above method(s) is not possible for you, you can even add the transactions manually via Koinly's web interface.
If you want to use CSV files, you must make sure to import your deposits/withdrawals and trades for ALL 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 cryptocurrency tax forms!