2024 RMD IRA Basis Calculation

I am using 2024 TurboTax Deluxe Desktop.  2024 is the first year that I had to report a Traditional IRA RMD which was reported on 1099Rs.  TurboTax placed my entire RMD amount in 1040 Line 4b (IRA 'taxable amount').  It also removed all of my Traditional IRA 'Basis' in Line 1, 3, 12 and 17 in the 'IRA Information Worksheet'.  My question is where did the IRA Basis go?  I had expected that the basis amount would be subtracted from my full IRA distribution to get the 'Taxable amount' for 1040 line 4b.  Instead the basis amount is not reflected on any form of my 2024 taxes...like it never existed.  Also there is no Form 8606 in the list of forms so I don't know if that is unusual.