When running multistream backup job (with Heuristic) using Plugin for File System, the incremental backup selection tree was empty on Create Selection Set page.
Due to which, you might not see anything during restore if incremental or differential multistream backup jobs (with Heuristic) using Plug-in File System are performed.
The issue has been resolved with Netvault Backup release 11.4.5.
Both the server and the client need to be upgraded to 11.4.5 and above. The issue will be resolved only for backups performed after the upgrade.