Replying to MaryM428: your answer about needing to use the original AGI for 2019 worked for me at my 3rd submittal. But if you knew this was the possible case, why wasn't that guidance also provided to users directly as part of the e-file process discussion/ description? Sounds like a very likely situation many filers might face.
While you personally can't change it, it also seems like a poorer protective measure (to use the past AGI amount when it is subject to being changed) than simply having the IRS rely on their IP PIN, a process that already required rather strong measures to establish our identity.
