After clicking Continue on the page that lists the Form 1099-R that you have entered, 2024 TurboTax will ask if your first contribution was before 2020. When you answer Yes, TurboTax will treat code T the same as code Q, will omit the distribution from Form 8606 Part III and will include the amount only on Form 1040 line 4a, not on line 4b as taxable.
