Chargeback for VMs with multiple Disks and different Rates

Hi there,

can ManageIQ calculate the costs for a server which has multiple Disks with different storage rate assigned to them?

e.g: We are having an archive Server which has a small system disk ~30GB and multiple 40TB attached to it and want to calculate the costs.
Right now I have created different Storage Rates (A expensive one for fast system Disks and a cheap one for slow archive Storage) and assigned them via Cost Center Tags on the specific Data Stores.
When I create a chargeback report everything works fine, execpt for these specific VMs. It seems it always takes the Rate of the first disk and applies it for all Disks on the Server as well.

Is there a way to solve this?