"If the IRS change the return then you must change the return so it matches with the IRS did before you start the amendment process."
This is just not possible if the IRS gave you UE credit but not other credits you are now entitled to, yet those credits are put on your 1040 automatically by Turbotax.
Unless you do an override.
TurboTax Online won't let you override.
Nor is it certain cd/download will even let you e-File 1040-X if you override 1040, since you are now putting yourself in "must mail" mode.
It is a Catch-22 but still you should be able to update line 18 to show as adjusted.
