Created a new field just so that I can copy the 'assigned to' field and use this for reports. For some reason just using the 'copy' function in the WIT does not display all of the people in the 'assigned to' field correctly. Some show as unknow, but if I add 'System.assignedto' to the report along with the custom WIT that was put in, it will have a name for those unknown values.
Not sure how to resolve this issue.