We e-filed our 1065 using TurboTax Business a couple of weeks ago and just realized that we need to add some interest income. In other words, we needed to make a small correction to our filing. We have research this quite a bit and learned about the 1065X and went through the process in Turbo Tax and produced a 1065X, but we came across an article today regarding Superseded Returns. Apparently, these are done when the filing deadline has not passed. The deadline for the 1065 is March 15. So, we would like to submit a superseded return using TurboTax, but it doesn't seem possible. Can someone shed some light on this subject? If we end up filing a superseded return via mail, I understand that we need to write the words, "SUPERSEDED RETURN" across the top, but not sure what forms we need to print out and mail in. Thank you, Peter