Incorrect operting system information is showing in Reports in SEPM 12.1

Hi,

I have recently updated the SEPM console and clients to SEP 12.1.2015.2015 from SEP 11.0.

While exporting the reports from "Reports" tab, some of the servers is showing incorrect operating system informations. These are windows server 2003 but showing as windows XP workstations x64 bit.

While checking the operating system information from "Client" tab it is showing the correct information about operating system.

Does anyone suggest me, what's going on.

Thanks & Regards

KK