1040 X not created for amended return

I would like to amend my 2023 return.  I opened the 2023 file and selected amend the return.  After making the required changes, I saved the amended return under a different name.    

Turbotax did not create a 1040-X for the amended return and made the same changes to my original return file even though I did not save it.  

Any suggestions?  Thanks.