@RichardDY - yes for corporations and businesses, but not for individuals. Once an individual's tax ID goes through that IRS system subsequent returns, with the exception of 1040X in 2019 and 2020 would be rejected by IRS servers. It is a security issue. There is already a significant amount of fraud committed by individuals filing on behalf of others to receive their refunds, sadly. Allowing a superseded return would mean that if I filed my return today, and someone trying to commit fraud by filing using my information they would be able to supersede my correct filing with their fraudulent one.
If I misunderstood the question, my apologies. While the original question was about a business return, I was replying to the comment about it not applying to TurboTax for "nonbusiness", and I wasn't very clear in my reply.
TurboTax Business is probably just not equipped to handle superseding corporate returns, but it is also not a product that has a large user base, so I don't see it happening.
