I must profusely thank macuser_22 and dgs0321for their good advice. I did wind up calling the IRS and they said that the easiest thing to do is to send them the 2018 1040X. But since there are no amendments, the IRS person said to fill out all of my identifying information, address, and filing status; to explain in Part III that I'm filing the 1040X in response to their letter, and then to sign and date it. But the person said not to fill in any numbers in lines 1-30 since there were no changes.
Please, does that sound right? Leave the number lines blank? Thank you.
