proseries instructions state to make the changes on the original, not the newly created return

How to complete Form 1040X

1. Open the client’s original return.
2. From the File menu, select Save as.
3. Save the return using a different name. For example, SmithCopy20.20I
4. Go to Homebase. 
5. Open the originally filed return (not the copy you just created). Use the File name column to tell them apart.
6. Press F6 to open forms, then type X to highlight Form 1040-X in the list.
7. Click OK.
8. Scroll down to the This return is for calendar year line.
9. Check the box for the year you’re amending.