OK, that answers my question; however, the fact that I'm asked to enter the taxable amount of the distribution led me to believe that Turbo Tax had the information it needed. If the entered gross and taxable amounts differ, TT ought to force me to enter the necessary information to fill out the Form 8606 without my knowing to hit the Continue Button. Fortunately, I only use Turbo Tax to prepare an estimate for my CPA, who got it right.
