Archived puppet classes are still visible in host group

Issue

Within a third-party or custom puppet module, puppet class files ending in .pp were moved into an archive folder under the manifests directory. However, when the module is imported into Red Hat Satellite 6 and added to a content view, those puppet classes that were archived still appear in the "Available Classes" column under the "Puppet Classes" tab.

This screenshot illustrates what this situation looks like in Red Hat Satellite: