withdraw $20K from ira to Roth IRA is it taxable?

early 2024,  I converted two 401K accounts to large Traditional IRA and a smaller Roth IRA.

I then in Dec 2024 withdrew $20K from traditional IRA and transferred to the Roth IRA 
I received the 1099R form for the $20K 

entered into Turbotax Premier 
1. gross Dist =$20K

2A taxable amount = $20K

2b taxable amount not determined = X

7. Distribution Code = 7

IRA/SEP.... = X

my question is - I thought this withdrawel would have been taxable  - but its not showing any difference to my Turbotax refund

help?