After you file

@tim2469 What operating system are you using, Windows or Apple?  

I do not see this issue at all.  I am running a Windows 10 OS using 2020 TurboTax Premier desktop edition with the latest TurboTax update installed - Version 020.000.1766

Using this procedure -

Continued the 2020 tax return.

Clicked on Federal Taxes

Click on Other Tax Situations

Under Other Forms

On Amend a return, click on the start button

Just amended a 2020 test tax return,  The Form 1040-X was populated and ready to print and mail.  

You said you do not see a way to delete the Form 1040-X.  There is a Delete Form button when any form, schedule or worksheet is opened when using Forms Mode, along with a Print and Close Form button

This is the Form 1040-X for 2020 that was completed -