Deductions & credits

I forgot to mention, I converted $20000 of traditional IRA to Roth IRA in 2022; I already entered that in Turbo tax.  The carryover Roth basis $15000 is to be entered as a 2022 contribution?  I don't understand.

 

As for the carryover State and local taxes amount, it's considered a prepaid taxes for 2022?    That amount I already paid to the State in 2021.  It doesn't make any sense to me that it's a carryover deductible for 2022. please explain.