Problem: Filr users (desktop, mobile, and web) are suddenly unable to see files and folders that were previously visible.
This happens when the metadata index no longer contains information for the objects that have disappeared, either because the Search server goes down, or because the index itself changes (for example, during a rebuild).
To understand how the index affects object availability and how to prevent file/folder disappearance, see Filr Search Appliance—Accessibility, and Searchability
in the Filr 3.4: Understanding How Filr Works.