Reading SearchFolderID

The client MUST read the value of the SearchFolderID subproperty from every search folder, as specified in [MS-OXOSRCH], in the Finder special folder. Any search folder that has this subproperty is a persistent search folder, and the client SHOULD display the search folder as such in the UI. Searches with the Finder special folder are further specified in [MS-OXOSRCH] section For more details about the Finder special folder, see [MS-OXOSFLD].