Esta opción no existe mas en SCVMM 2012R2, es un tema de diseño.
Discontinued support, in System Center 2012 R2 Virtual Machine Manager, of the VMM feature that enabled conversion of existing physical computers into virtual machines through the physical-to-virtual (P2V) conversion process. For information about how to
use an earlier version of VMM to mitigate this change, see the
How to perform a P2V in a SCVMM 2012 R2 environment blog entry.
Tu mejor opción es pasar por 2012 y luego que es virtual... pasar a 2012 R2
http://blogs.technet.com/b/scvmm/archive/2013/10/03/how-to-perform-a-p2v-in-a-scvmm-2012-r2-environment.aspx
Esteban
http://nextadmin.blogspot.com