I've created a Change Catalog Item which has a process field called 'CAB Date'... I'd like to be able to filter my Change Index page by this field but I'm not able to add it to the view. If instead of a process variable, I use a custom field and add it to the 'Change' form I can see that it's available in the Change Index view, but I'm unable to see it for entry when I launch the Catalog Item. Any suggestions?