Wouldn't it be nice if there was a pop up that asked 

"Do you want this return to update with new tax changes when unlocked"

Maybe Intuit will update to allow the 2020 1040X to be e-filed with overrides (yes, I'm laughing too)

I'm not sure how I can e-file for the clients whose unemployment corrections caused EIC to generate.

Can I turn off something in the conversion/transmit process that will allow it ?

The IRS will not correct these if I don't submit the 1040X with the 8867 Due Diligence.