My 2016 E-File was rejected because I didn't know my 2015 AGI or PIN. So I mailed in my Federal and State 2016 forms. The state received my tax form and deducted the check. I downloaded my 2016 tax transcript and the Federal Government says there is not one filed for 2016. Lost in the mail? Who knows? So I cant file my 2017, because I don't have my AGI from 2016,or pin, on file with the IRS. How do I fix this? Can I amend an entire 2016 tax document? Or?