Features - Import spreadsheet, explorer view, edit in datasheet etc. not visible in Extranet sites

The reason these options like – ‘import spreadsheet’ and ‘edit in datasheet’ are unavailable on DMZ sites is because we use Forms Based Authentication (FBA) on them. Client Integration doesn’t work well with FBA and hence has been disabled. This feature provides access to above options. Other features like ‘explorer view’ and ‘open with access’ shall also remain unavailable owing to this.