In SCVMM 2012 R2 I can go into the properties of a VM and set the VLAN and it saves and correctly sets the VLAN on the machine.
If I then go back into the properties the VLAN option is unchecked. If I make a change to any other setting and save it then removes the VLAN from the machine, disconnecting it.
On SCVMM 2012 SP1 it worked fine, on SCVMM 2012 R2 the Hardware configuration is always missing the VLAN information.
Can somebody else confirm that they are having the same issue with SCVMM 2012 R2?