Understand and organize your zones before you create new zones to replace them.

You can identify legacy zones by viewing their details. A message appears in the Zone Rules section:

• “This is a legacy Zone Rule and cannot be deleted.”

Before you start creating new zones to replace legacy zones, identify and organize:

1. Zones that can be deleted
2. Zones that are not used for device policy assignment
3. Zones that are used for device policy assignment
4. Zones that are used for update policy assignment