Camera Name oddity in NVR

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Following the update of my RLN8-410 NVR's firmware to v3.4.0.293_24010832 the Camera Name field under each channel/camera's Display tab can not be set to None. EVERY ONE of my 8 channels' "Camera Name" fields appears as one of Top Center, Top Right, Bottom Left, Bottom Center, or Bottom Right, but none appears as "None" nor can I select None in the drop-down and have it stick/stay in place. Thus far this is only an annoyance, because selecting "None" causes the camera's name to disappear in the various displays, but it inspires questions:

1. Has anyone else experienced this?
2. Could this be an artifact or by-product of my not having Reset my NVR's Settings when updating the firmware?
3. Is there anywhere here that explains, if I do goto NVR Maintenance settings and select "Restore to Initial Settings" which of my current settings get blasted-away? It's not obvious which among the many settings are in Cameras and which are in the NVR, and I DID NOT do the Reset recommended when updating firmware.

Any feedback is welcome.