In BVC 1.5 or higher the Forensic Search option (IVA) is not visible in the GUI anymore using the default settings.

Since CFM 5.x Configuration Manager, Cameras / Encoders are connected via http protocol as default setting.
BVC verifies connection protocol and decides which search funtions are visible in BVC GUI.
If a device connection is http, Forencic Search (IVA) is hidden and only Simple Search is visible.
Change the connection protocol in Configuration Manager to RCP+
