I don't think that's what happening. When you amend a return, the program shows the additional refund you are due for the change. So, if your original refund was $2800 and now it says $575, that means you are getting another $575 on top of the $2800..
Your revised 1040 should show a refund of $3375. The 1040-X should show an additional amount due to you of $575.
