I have a hard time figuring out billing categories and license sets in UM. Please help 
I'm running UM 3.4 Beta in my lab. The lab consists of two vCenter servers, vc01 and vc02. I have on ESXi host connected to vc01. This host is licensed with vSphere for desktop.
vc02 have five ESXi hots connected, they are all licensed with vSphere 5 Ent Plus. I've attached some screenshots of my UM.
Under billing Category in UM I set the vSphere for Desktop license to Perpetual and the Enterprise Plus license to VSPP.
I then created a License set named TEST where I only included the Enterprise Plus license.
Running a Customer Summary report without specifying a License set gives me a Billed vRAM (GB-Hours) of 14,734. Going back and choosing License set TEST
and running the same report gives me a Billed vRAM (GB-Hours) of 20,819.
Why is the second report reporting more billed vRAM then the first?