Amazon S3 Media Storage w/ Prosites Shows 0% Storage Used

I recently installed the ProSites plugin on my multisite network along with the Amazon S3 plugin and the WP Offload S3 plugin. Recently, I noticed after uploading media on my sites, it shows that I'm using 0.00 MB. Is there any way for the plugin to keep track of media uploads that are transferred to Amazon S3?

Thanks,
-Marc