Go thru the steps to e-file it. Once you reach the screen where it prevents you from e-filing because it's calling for 502A, click continue. Click continue again to get to 502A. Then go to Forms. You should see it there and be able to delete it. Once deleted, go back to step-by-step. Do not click on anything and go straight to File Return screen and follow the steps again. It worked for me just now.
