Hi Jeanne,
I am seeing the similar issue in task object where document link appears to be different in list view and when we click on that link it gives below error message.
We are on CA PPM 14.2 patch 5 on premise, and link difference is exactly same as what dale has defined in above comment.
Error Message:
DMS-05100: You do not have permission to access this document. Contact the document owner for access to the document.