If your facts are the same as the original question, then no need to amend.
Complete form 3115 and the Section 481(a) will handle the adjustment necessary.
TT does not provide guidance for this form and the return will need to be paper filed.
Send the return certified mail return receipt requested to verify your mailing. This is very important, especially now as the IRS has millions of unprocessed returns.
*A reminder that posts in a forum such as this do not constitute tax advice.
Also keep in mind the date of replies, as tax law changes.
