It seems odd to me that the ideas portal category filter metrics exclude the number of shipped ideas. In effect, if you had shipped 100 ideas for a particular category and had no ideas in other statuses, the category filter metric would show no ideas against that category.
Surely the user clicks on a filter category to see ALL ideas in that category irrespective of the status. If they then want to additionally filter by status they can.
Currently if you click on a category filter the volumetric number shown does not match the numbers that then appear in the status filter.