Step 1:

Log into your BitBuy account.

Step 2:

Select Reports from the menu on the right.

Step 3:

Click on the Download button in the bottom right corner in the All transactions box.

Step 4:

Navigate to Step 1. Import. Select Add Account then choose the BitBuy tab on CoinLedger. Click on Upload File or drag all of your CSV files into the box to import your transactions.