All of my Roth money is from conversions. The earliest one should be more than enough to cover the amount I want to withdraw right now. Can I just enter that one or do I need to enter all of them. If I don't enter all of them how does TurboxTax decide what to do when I make another withdrawal? How does it keep track of principle that I've already withdrawn vs accumulated gains in the current balance after I have made a partial withdrawal of principle?
