Convert OVF from VMWARE to HYPERV

I have a VM in OVF format which is exported from ESXI .  Now since i want to import this to Hyperv. i had installed OVF Import/Export tool in my SCVMM server as per this link http://technet.microsoft.com/en-us/library/jj158932.aspx

Now as per the instructions in the link above, i have converted the VMDK file to VHD format using citrix xenconvert. Then used the import commands

1. $vmm = get-scvmmserver -ComputerName "MyVMM" ---- executed
2. $ls = Get-SCLibraryServer -ComputerName " MyLibraryServer" ---- executed
3. Import-SCVirtualMachine -ImportVMPath "C:\test\Windows7Ultx86.ovf" -LibraryServerObject $ls -VMMServerObject $vmm -LibrarySharePath "\\MyLibraryServerFQDN\MSSCVMMLibrary\Import\" -VHDSourcePath "C:\test\Windows7Ultx86-disk1.vhd" -VMName "Win8Machine"

First two commands are excuted then ,the third command throws an error saying

*************************************************************************************

Import-SCVirtualMachine : UnknownVirtualSystemType
At line:1 char:1
+ Import-SCVirtualMachine -ImportVMPath "C:\test\Windows7Ultx86.ovf"
-LibraryServe ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~
    + CategoryInfo          : NotSpecified: (:) [Import-SCVirtualMachine], Exc
   eption
    + FullyQualifiedErrorId : System.Exception,Microsoft.SystemCenter.VirtualM
   achineManager.OVFTool.ImportVirtualMachine

*******************************************************************************************

• Is there anything i need to edit in the OVF file???because if i open the ovf file i see this line related to VirtualSystemType:

 <vssd:VirtualSystemIdentifier>Windows7Ultx86</vssd:VirtualSystemIdentifier>
        <vssd:VirtualSystemType>vmx-08</vssd:VirtualSystemType>
      </System>
      <Item>

there is a line in vmx which shows::->>>xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <References>
    <File ovf:href="Windows7Ultx86-disk1.vmdk" ovf:id="file1" ovf:size="2832169984" />
  </References>

since i use VHD now should i update this line???

Please help me to accomplish this task.  And Microsoft please make it easy for us to import OVF's