Symptom:
The CSV export of the Network Device is not showing correct Network Device Group.
Cannot import the previously exported CSV - error: Failed reason: NDG doesn't exist.

Affects both Device Type and Device Locations.

The Network Devices UI filter on location or device type is matching on the old parent Network Device Group name.

Conditions:
The network device is in the Network Device Group that is a sub group - has a parent.
E.G. All locations -> Europe -> London

Previously the top Network Device Group name was modified - e.g. previously:

E.G. All locations -> UK -> London