Why do I have duplicate listings for "Estimated Tax Payments" that are the same in my "amended federal return" summary? And I can't delete the second duplicate.

There was no way to remove the duplicate Estimated Tax Payments" in the UI.  The person I talked to was nice, but didn't have a solution, so they created a case #, I waited a day and called back.  I needed to remove the Amend entirely, which feels right since I didn't want to Amend, I wanted to edit the existing 2024 taxes that I'd worked on earlier in the year, but TurboTax had in a Submitted/Printed state, that I couldn't edit, so the Amend felt like my only option. Then after a few phone calls, I believe the help desk modified something behind the scenes, then I went back to the beginning and restarted without the Amend, and I didn't need to re-import the 1099 data.  No solution other than to delete and redo.   A mostly awful experience really, since this duplicate entry also calculated that I owed money more this year as well, which logically doesn't make sense either that the dup payment would cause a higher calculation.  One thing to point out is, once you're in the review process at the end of the flow and getting ready to complete, it's very difficult to go back to recheck calculations made earlier since the left UI changes to Tools and Print Center, not the Federal and State that it has while you're working on it.  Also, the Back buttons, (using Safari on a Mac) tend to send you to pages with spinners that take very long to finish or never load.  Small points, but frustrating when doing taxes that are calculating how much money I'm losing.