We discussed the possibilities and I focused on security setting issues but, by the end of the call, nothing had worked.
Two hours later, Kim called me back – she had figured it out and, like many good problem solutions, it seemed so obvious in hindsight. The problem was that the object had a Show Condition defined that would make the object visible only under a specific data condition. The data in the new report was different and the condition was not satisfied. So, the object was behaving as the Show Condition directed and it was simply not visible in the new report. Now, I know to be conscious of the Show Condition when copying an object.