Simple CSV2 import

I’ve just successfully set up the simple CSV import and have pulled in my first set of transactions. My question is when I go to pull in my next CSV do I have to be careful not to pull in a transaction I have already imported?

I.e. will the transaction sheet just override rows with the same transaction or will it create duplicates that I have to go in and manually delete?

Neither Google Sheets or any Tiller tools will prevent duplicate imported transactions, so you’ll want to filter the data you’re importing and/or go through everything after it’s been imported and remove any duplicates.