I did a refinance in 2019 and entered the deduction limit manually. The 2019 result was transferred to 2020 return, and I deleted the original loan (copied from 2019) but then I am getting only 200 reduction in tax every time I switched from "original" to "refin" for the single loan I have. I ended up deleting all the loan and started again but TT didn't make any deduction.
This got to be a software bug as only for once, after I clicked done, a new option showed up. I can't reproduce the same option again with the exact same input.
This is very frustrating.
More details.
I have a 1.5M loan (refinanced in Dec 2019), with interests of 35K. The very original loan was from 2016.
If I input everything as accurate (inc. cash out for other purposes), and if I chose at the end "I will enter myself", I don't get the same input field I got with 2019 return on the next page.
However if I chose "figure out for me" and then put "1M for the home" and "$1.00 for the year end balance", I got most of return I expected (off by ~1K).
Here is why the software is completely buggy. If I went back and changed the loan as the original loan (or with any other options), the deduction will stay!!
Or if I deleted this loan and then simply made up everything and created a fake loan (original v.s. refin, different originating dates etc etc), no deduction whatsoever.
Also as I mentioned previously there must be some kind of cache involved as one of options I saw never showed up again, even after I deleted the loan and restarted again.
This is a desktop version (for business), and I also restarted the software once.