After you file

Thanks for the reply.  

 

If the IRS allows e-filing of the 1040-X, why doesn't TurboTax allow e-filing of this through it's software?  Why would TurboTax shut down e-filing at all on prior year returns, regardless of it being an original or amended return?

 

If the IRS allows a 1040-X to be filed electronically, how does one go about doing that?  If Intuit, one of the largest companies in this space doesn't do it, then who does?