Turbotax shows two versions of tax return filed and accepted. I am confused and need help

Three questions about using TurboTax please:

1.  I only filed tax return(federal and state) once, but there are two versions submitted. Two big squares on the first page of Turbotax show that both were  accepted. What happens? Is it because I opened Turbotax twice and worked on them interchangeably and saved? So neither version is completely correct.
2. I began to work on the amended return. One version of them appeared to ask me to make the necessary changes . Since I can only amend one version of them, what will happen to the other unchanged version after I filed the amended version?
3. I began to work on the amendment to make necessary changes of the version allowed me to change. I mistakenly of using  save, not save as, when I worked on the changes. After completion to begin to file,  Turbotax  says it will file

• state amended return and
• Federal Form 1040 , but not Form 1040X, why? what can I do?

Thanks