LiveNX uses the expand and collapse feature of the device tree in order for a user to hide certain information from exporting to a log file. To prevent certain devices from exporting to a log, create a group and then shrink the group, so no device are visible. To prevent certain interfaces from exporting to a log, shrink the interfaces so only the device is visible. Right-click on the device tree and select Export Data.

The .csv file will display only those devices and interfaces visible in the device tree.