If you purchase any coins within Trezor, you will need to change the categorization from "Incoming" to "Buy" using the dropdown arrow.
How to export Trezor CSV?
Click here and log into your Trezor Online Wallet.
Go to Accounts, select the icon of the token you want to downloada CSV file for
Scroll down to the transactions and on the right-hand side click on the 3 dots.
Click on export a CSV and import the CSV file into ZenLedger. On ZenLedger, navigate to Exchanges > Trezor and upload your files.
Make sure that the filename contains coinname_1_serialnumber.csv e.g. Ethereum_1_20221229T100054.csv, Bitcoin_Cash_1_20221229T100334.csv
Screenshot Courtesy of Trezor.io
Note- If your Trezor wallet is connected to the Exodus wallet and you have already imported the Exodus, then you will not need to import Trezor CSV. Importing from both sources will cause duplication.