Important note: Swap trades do not get imported from the file due to the amounts not being present in the exported file. They should be imported manually.
Log into your Waves account.
Navigate to Internal Transactions.
Click on Export in the top right corner.
You will receive a file in CSV format. Within CoinLedger navigate to Import. Select Add Account then choose the Waves tab on CoinLedger. Click on Upload File and drag your CSV file into the box to import your transactions.