Some info for you.
a) no one can e-File 1040-X unless they already e-Filed 1040 with the same tax service.
b) 1040-X amendments are taking nine to eleven months, or longer now.
c) critter-3 is saying that the IRS doesn't lift the deduction conflict and allow the other person to e-File after the first person files their amendment, even when it is approved.
Any way you look at it, you have a real mess on your hands if you insist on changing who is claiming the child.
