Case Tracker and Node Relativity

Currently when I submit a new case from the operations link 'add Case' it goes to this URL (with CT Basic enabled):
http://mysite.com/node/add/casetracker_basic_case/78

Then this happens (comment from source code)

  // if there's no project ID from the URL, or more than one project,
  // we'll create a select menu for the user; otherwise, we'll save
  // the passed (or only) project ID into a hidden field.

This works as advertised. However, lets through Node Relativity into the mix.

NR produces links like this:
http://mysite.com/node/add/casetracker_basic_case/PARENT/78Note the added 'parent' text to the URL.

Once I click on that link, case tracker no longer can understand the default project ID so it cannot assign a project without having to select it.

Does anyone have any idea what I need to alter in casetracker.module?

Any help would be great.

Thanks,
txcrew