Can't e-file Amended Return

Using TurboTax Business Edition, 1120S S Corp Federal Return.

 

When I go to amend the return and follow the prompts (save as a new file, make the adjustments), seems to work fine but then why trying to e-file the amended return, it says "You have no returns eligible for e-filing. The following return has been transmitted."

 

It seems like it isn't recognizing the return needs to be refiled as '"amended". I also verified the the 1120-S form itself has the box checked for "Amended Return".

 

Any suggestions on what we could try?