Here is my situation:
I have a pivot table set up and I understand how I can show or hide detail.
I have a field for a 'SystemID' and another is for the "UserName". To
maintain anomynity of the user's name in a chart, we only want the 'SystemID'
to be visible with the data. Yet, we want to use the 'UserName' when we are
selecting who's data we want to refresh on the chart.

I have the HideDetail enabled for the 'UserName' as well as 'Show Items with
no Data', but it does not work. It will only display the ones with data that
pertain to the 'UserName'. Yet, when I have these enabled for the 'SystemID'
I receive ones without data that I did not select from the 'UserName' field.
What am I doing wrong?