if you e-File an amended return you will get an ACCEPTED message just as you did when you e-Filed 1040.
if UCE is the only change on your return, don't submit it because IRS is doing it for you as fast as possible.
even if it is not, it is better to wait until IRS does what it is going to do.
you only get one 1040-X e-File, don't waste it.
