Saved state is not backuped in HyperV backup for Win2012R2

I am trying to backup Win2012 R2 VM on my Win2012 R2 hyperv host using VSS.
Before starting backup my vm is in Saved status.
But after backup I cant find saved state file *vsv and *bin file in the backup so I am loosing whatever contains I have in saved state.

Its working fine on Win2008. Is there any change in VSS/Saved state behavior in Win2012R2?

hypervbackup is the utility  I used to run backup.

Thanks In advance. Please let me know if more details are required.