I hope that in addition to fixing the problem going forward TT tells those of us that filed without a form 2210 (which was suggested by the telephone support) what if any issues we may run into with the IRS. I qualified for a waiver under the 85% rule.... I was told on the phone that if I could figure out how to delete form 2210 my efile would be accepted and I would be OK as the IRS would recognize I did not owe a penalty. I now see in the "official" workaround they are suggesting you MUST file a 2210 and mail it in. Very confusing which is not what you expect when paying for Turbo Tax