I see all machines are processed in online mode. Nowhere in the eventlog of the guests I find an hint, that the machine is stopped. I think, there is no saved statebackup. But the system uptime counter is starting from 0:00 after the backup.
One host is a hyper-v 2012 R2 and the guests are 2008 R2, 2012 and 2012 R2. Only the 2012 R2 has an uptime counter, which is not reseted.
On an another hosts,same configuration, all guests have reseted uptime counter, even the 2012 R2 guest.
It would be very nice, if I could change this behavior.
Thanks for your help at this point....