Ahhh....correct, "normally" the Fed would zero out too...but might not in some rare situations. 1) Th IRS made a very late change to one of their forms for 2019...like something like June, long after 99% of folks had filed. It didn't affect many...but that could have changed your file, though $3k sounds a bit much....seem to recall it had to do with a tax calculation using Schedule D...but I could be mistaken. 2) IF you made any changes in your tax file AFTER you e-filed and it was accepted, the tax software actually does track the change...or at least it did for me in a couple tests I did (TTX hasn't confirmed this that I know of )....and the amend start pops that up right away.
The only way for you to see what's going on is for you to look at a printout of your former 2019 1040 tax forms, and then look at the new 1040X in Forms Mode, and look line-by-line to see what has changed. It's possible that you didn't really enter your original 7k payment properly, and you need to reflect that on the proper line....or find something else that looks inconsistent.....unfortunately there could be any number of things gone wrong and there's no way for any of us to work that out for you.
One critical thing you need to do, is to keep and entirely separate copy of the original filing, and only amend a second/third/4th copy of it and never work directly on the original.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
