(Btw, to answer the question about amending the return to avoid mailing form 8453... I believe the amending form Form 1040X itself cannot be e-filed and must itself be mailed in. So it sounds like we'd need to mail something in either way once the "mistake" is made to file a return using the summary method.
See <a rel="nofollow" target="_blank" href="
https://www.irs.gov/faqs/electronic-filing-e-file/amended-returns/amended-returns">https://www.irs.g...> )
