We worked with CA Service Desk on this and I was advised that the field basically does not exist in such a fashion that it will display on the email notifications. Turns out the field we were told to add to the database was not correct. My concern here is that this field displays on 4 different steps in the workflow and allows you to add data that data has to go somewhere and be able to be displayed somewhere otherwise the work flows really do not work. Othere than you manually would send a email from the tool which then defeats the purpose of the email notification.
Does anyone use this workflows in CA Service Desk specifically with the Knowledge Module? If so can you see the comments field on the email?