see here for the instructions on backdoor Roth entry. if you don't qualify for a deductible contribution then Turbotax may assume it's non-deductible so you're not getting a question to elect it
you also need to input the 1099-R and answer the questions that come after that entry to specify it was a Roth conversion.
https://ttlc.intuit.com/turbotax-support/en-us/help-article/retirement-benefits/enter-backdoor-roth-...
I don't understand what you mean by "How are the forms for new Roth IRA conversions for 2025 having these Form 8606s created?" - but hopefully the above helps.
If you are on desktop you can check the outcome on Form 8606 and Line 4b of your 1040, in Online you will need to have paid and review 8606 in the PDF with all forms and worksheets.
If you did have $1 left in the IRA at year-end you may end up with $6999 converted tax-free with $1 basis carryover on Form 8606 and tax owed on $1 income 🙂
