When I amend my turbo tax return do I have to include the previous data and the new data or just the new data (revised items)?

[ChristyW · Accepted solution]

Both, assuming you are amending an already accepted return. If your return has been accepted, make sure you are amending in that return, not starting another one. You will then be adding, or changing that return. 

Follow these steps to amend your return in TurboTax Deluxe CD/Download: https://ttlc.intuit.com/replies/6602208