Why is the EGX400 Device List Grayed Out?

Issue
When trying to update the device list on the EGX400 it is grayed out.  The device type can not be changed.

Product Line
EGX400

Environment
Editing Web page

Resolution
The addresses and device types of defined devices are grayed-out when logging is enabled on the EGX400 under the Device Logging screen. A device can be modified when logging is disabled, but all logged data for that device will be deleted.