Hi,
You are right added as https://www.ventismedia.com/mantis/view.php?id=17843

Thank you for reporting.

Dear MM Team,

I seem to be unable to delete unused classifications. For example if an occasion value has no files linked to it, there appears to be no way to remove this?

For genres the system seems to "clear" unused values automatically. Shouldn't this work similarly for classifications?

Thanks.