We have created dynamic workstation groups using the machine-chassistype option to distinguish between laptops and desktops. As of late it appears that devices formerly having a chassis type as say "laptop" or "notebook" in zcm inventory are now reporting the chassis type as "unknown". This is is causing the workstation groups to become very inaccurate. If I run a WMI script on an "unknown" device it reports back as the correct type to it has to be zcm causing this issue.

Does anyone have an idea where to look for a cure or is there a better way to group workstations by device type?