Good point. It does seem it could have been renamed.
Would it be possible to know what the fields have been renamed as to make sure I am pulling the correct information? Or who I can contact to check this? The ones that I am still unsure about are the properties.usageStart and properties.instanceId. I think it could be properties.date and properties.meterId, respectively, but it would be good for someone who changed the fields to confirm this. Thank you!