Did anyone tried to efile 1040X with the update

You need to read the instructions for the new 1040x listed above. You are only able to efile a return that you originally efiled in your ProSeries software, and the process is different from prior years 

https://proconnect.intuit.com/community/proseries-tax-news-updates/discussion/individual-amended-form-1040x-for-e-file-frequently-asked/00/97227

Yes, and just spent 2 hours with support.   The lack of instructions with the rollout has been an issue.   First off if they client is changing filing status they have to paper file.  With that said, here is the detailed link on instructions I found on how to do amended returns from within the original return filed.   Yes, you heard me right you will be rethinking totally,  how you have filed returns for prior years from 2019.   The amended return is filed from within the original return!

https://proconnect.intuit.com/community/amend-tax-return/help/how-do-i-amend-an-individual-return-using-intuit-proconnect/00/4506

Go to the link above and follow the instructions.    Check the list for exceptions that cannot be e-filed.  Happy Tax Filing guys!  

I did spend some time with this.

I had already prepared a paper return of Form 1040X earlier in the year.

Even though I followed all of the instructions, I was not able to efile the Form 1040X.

The error message indicates that for some reason, the program is not recognizing the original return as "e-filed".  I haven't contacted support yet, support always takes too long.

Sui

I followed the instructions, and it seems to have worked.  But 'oh snap',  I had them sign the 1040X and state of Calfornia forms,  Should I have had them sign the new 8879's instead?