Boxes 2a and 2b on 1099R (traditional to roth recharacterization)

I used after-tax money to contribute to a traditional IRA and then immediately recharacterized that money to a Roth IRA).  Turbotax said "based on your entry in box 7 on your 1099-R, you don't need to pay any extra taxes on the money taken out of this account."  However, turbotax also increased the amount I owed on my taxes by $2000.

 

Questions:

1. how can box 2a be 6000 if the broker also noted "taxable amount not determined"?

 

2. How can I note the contribution to my traditional IRA was with post-tax money?

 

 

Box 1: 6000

Box 2a: 6000

Box 2b: x (taxable amount not determined)

Box 4: 0

Box 7: 02

IRA/SEP/SIMPLE: x

box 12: 0

 

20200307_taxQ.png

 

Any help is appreciated.  Thank you.