Probably just cosmetic thing, but when I applied Windows 8.1 Update to SP3a then in Assigned System Updates section for server appear (as I found via internet) ZCM 10.3.4 GUID . It appear there in middle of applying Windows 8.1 Update.

Windows 8.1 Update for ZENworks (11 SP3) Update Completed
501003040043ffce784116ab1b312b55 Update Completed