Hide (some) Chart Detail

Hi:

I need to create a report with a simple pie chart. The pie chart will show 3 categories: A, B, and C.

When the report first shows, the user only wants the data for categories A and B on the report, but all categories should be shown in the pie chart and legend.

I originally did this by filtering at the group element, but then my chart hyperlinks did not work because the category C was had been filtered out.

Does anyone have any suggestions on how to do this?

Thanks!

RobR