I use Desktop, too. It is my understanding that our e-filed returns go directly to the IRS. I do know that a Desktop return is NOT saved on TurboTax servers. These returns are saved only to your computer's hard drive or another device you've used to backup your files.
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***
