Can I change my TurboTax file so it knows I did not mail in the earlier version I printed? (I want to e-file, and it won't be an amended return!)

I printed my federal return in February, but did not mail it in. I now need to change a few details before I file--but I want to e-file, and since I did not mail in the original version, I should be able to! But TurboTax thinks I did mail it in (since I printed it). How can I "retract" having printed it?