It seems to me that zeroing the 2017 tax, which avoids generating Form 2210, would be acceptable. As others have suggested, in many cases there is no need to file Form 2210; thus, it wouldn't be in your electronic return. If you feel uncomfortable with this solution, you could save a copy of your tax return file with the 2017 tax and Form 2210 and rerun it after TT fixes the problem. Hopefully, that would make Form 2210 go away. That way you have a correct record just in case, although as I understand, Form 2210 wouldn't be generated after the fix. Maybe this would just be a way to satisfy the user that the proper approach has been used. Worst case, I will wait until the problem is fixed. Did I miss anything?