Conversion of 401a to Roth IRA

I moved the money in a 401A to a Roth IRA.  When I received the 1099R the Box 1 distribution was 18,416.47 but the box 2A taxable amount was 0.00.  When i question the custodian the answer I received was "you don't get taxed on the money until you take it out."  I thought since it was a conversion to a Roth IRA it should be taxable.  They refuse to correct the 1099R.  When I enter all the info into TurboTax exactly as the 1099-R is written in the IRA Information Worksheet there is a line for Roth IRA that are not taxable at conversion. (I was surprised)  Question 1  Will TurboTax track these pretax dollars in my Roth IRA?      Question 2  Does it track the pretax dollars in the Roth IRA with  form 8606 or some other official form or do I have to track these pretax dollars in the Roth IRA myself?   I am using Turbo Tax Premier