I have the exact same problem, slightly different. It updated and saved my original return and ADDED Post Filing errors. There are now error flags in this saved form. All red alerts were resolved when I filed 3/5/24.
Also I realized I was missing the form 8606 for conversion to Roth. it was for this reason I wnt back to get it create one.
I am long time user of Turbo Tax and I wondering if I should use it any more.
