I would like to suuggest that the ResourceGroup column be filled in for all resources in the Azure Billing reports. Without the resource group data filled in for all resources it makes it much more difficult to track usage/cost associated with a specific resource group. For example, currently the Express Route resource does not get the resourcegroup filled in, even though its contained under a resource group.
Each service is responsible for providing the details related to usage meters. Since this is regarding ExpressRoute, we'll reassign it to them.