Stage two proposal #647: Remove classification domain and add new attribute

Stage two proposal attached.
It’s been reviewed by the assigned DITA TC reviewers (Carsten Brennecke and Gershon Joseph, as well as the following interested parties: Joe Gelb, Zoomin Software Pam Noreault, Ellucian Shane Taylor, Cengage Group The source will be in SVN shortly.
Best, Kris Attachment: Stage-2-647-replace-classification-domain-with-new-attribute.pdf Description: Stage-2-647-replace-classification-domain-with-new-attribute.pdf