Ok ... once again the online program does not amend the return automatically or correctly when switching from MFS to MFJ ... you must make direct form entries in the FORMS mode when using the downloaded program. You must also review the return before filing so if you did not catch the error when you filed the return it seems that the IRS did find it and made the correction and sent the bill. If you don't agree with their changes then you can respond to the notice as directed.
