Confirmed by Antares support:
Thank you for contacting Antares! Unfortunately we have not been able to address this issue in the most recent version of Auto-Tune Pro. Please use the same workaround as was posted in the forum you included in your email.
Thank you,
Carter
support@antarestech.com >
Antares Audio Technologies
Seems like an unacceptable workflow though …
Regards,
Maarten