Amended results are not the same as I calculated doing the return twice

I detected a couple errors in my return, so I first copied my return to a duplicate file and then proceed to adjust the backup version of the return.  It came out with a certain result of money that I owed (thankfully less than the original return).

 

Then I proceed to begin the official amended return and I replicated the exact same changes, but the amendment calculator came up with a value that was 2306 different than the edited return results and not in my favor.  I looked at the 1040 file and other modified files between the two and the result were the same, yet TT amend results are different.   I guess, I need to dig into why the results are different.  Are there any obvious reasons why this would occur?