You can import Ledger Live transactions via export (preferred way) or wallet addresses. However, you should NOT do both, as it will create duplicate transactions.
How to generate a Ledger Live CSV and import it to ZenLegder?
TEXT INSTRUCTIONS:
Here is how you export your Ledger Live transactions and import to ZenLedger:
Download and install the Ledger Live app from here and connect to your Ledger hardware.
Click on Accounts on your left.
Select the ellipsis (...) symbol on the top right.
Click the Export operation history option.
Select all the Accounts on your device.
The screenshots above are the courtesy of Ledger Live Support
Select all the Accounts on your device.
Upload the file to ZenLedger under the Upload/Wallets tab, find Ledger Live, and upload your CSV.
How to import Ledger Live via address?
You can also import Ledger Live via wallet address. Steps-
Go to Imports > Add Account > Wallet Import
Select the appropriate coin from the Dropdown menu.
Put the wallet address.
Select if your wallet is in the USA. If you are in the US, your wallets are also considered the US.