I filed my tax returns and sent them via e-file. Both the Federal and State ones were accepted. I then realized I had to attach a 1040-NR separately, which isn't supported by TurboTax so I can't use the amend option either. Instead I would need to (1) Cancel the e-file, (2) switch to mail file, and (3) create a 1040-NR separately, attach it to the original 1040 I made on TurboTax, and mail it off. I'm stuck on (1) though; how can I cancel an e-file that was already accepted?
Or, if possible, I was thinking of filling in a 1040-NR and sending that by mail. It won't be attached to the e-filed 1040, but would the IRS be able to connect those two?
