Tried to E-file a NYS it-370 on Pro Series after my accepted 4868 came through and was getting an e-file error message that I had to correct Federal return errors. This is AFTER I filed my 4868 and of course the return had errors for missing data which is why I am filing the darn extension in the first place. 

Customer service told me to uncheck the "checking for errors" box and hit send. ONLY EXTENSION was highlighted The program instead filed the entire incomplete return!!   I have heard other people have had the same issue with NYS extensions. Now will have to Amend the NYS return

Why the heck would the program file the whole return when I was only asking for the EXTENSION ??

What's the point of choosing NYS extension only if this is going to happen..........