Counter not incrementing properly

Am doing some testing on my site...the plugin works great when I add a new site (the site counter increments by +1)...but I decided to delete that site to do further testing, and observed that the site counter did not .... de-increment? The counter still shows one blog in the category when there are now zero...didn't know if maybe there was a magic trick I was missing and wanted to ask! :slight_smile: