How to force INotificationController::CreateUpdate() to actually update respective Actor's Date


when using  INotificationController::CreateUpdate() for an existing notification, I have noticed that the date for an Actor is not updated, in case the
author is already present on the authors list.

Does anyone know of a way to force the respective date to be updated?

Currently the only workaround I can think of is to read the notification, and update it twice, first to remove the author and then add it back again with updated date.

Is there a better way without incurring such performance hit?

Thanks in advance.