You can change the due date for client letter purposes in the 5.1 input section. However, if you e-file the return now, it will still do the automatic withdrawal on April 15 regardless of what the letter says unless the program is updated.
Probably would be safest to just avoid doing automatic withdrawals because they are going to get us in trouble - guaranteed.
It is my understanding from talking with support that they are working with IRS to get that changed. Don't know why IRS has to get involved. Maybe they will eventually let us change the payment date on a return already e-filed.
I think it's perfectly reasonable to manually change every dadgum letter. 😁