I always use the 1040X as well (it keeps things straight in my head as to what's been done)...but if you're impatient and really want mail something in before the 1040X is available, you do have this option.
Paper returns are at the mercy of the data entry clerk that enters them, I see them miss stuff all the time.
Had a new client last year that had a lump sum SS payout in 2017 for 4 years worth of SS income, the preparer did it all right (even though it was some scam preparer that didn't even sign her name to the return!), they paper filed and the IRS data entry person missed the LSE next to the SS amount and IRS sent a bill charging taxes on the whole SS amount...they'd been making payments to IRS for this money they didn't owe during 2018...I filed an amended and got them back the original refund along with all the erroneous payments and interest!
In the 1040X explanation, I pointed out that their data entry clerk screwed up and sent a copy of the original 1040 with the LSE highlighted!
♪♫•*¨*•.¸¸♥Lisa♥¸¸.•*¨*•♫♪
