VMware P2V (Physical to Virtual)

Last night we migrated another server to our VMware environment.  This morning I have two instances of this server in UpTime.  One is the old physical server and the other was auto-discovered by UpTime as a discovered virtual machine.  I am glad that UpTime now recognizes the new server as a virtual.  I am also glad that UpTime did not automatically delete the physical instance of that server.  My question is, what is best practice in UpTime when doing a P2V migration?  I realize that I can just delete the physical instance and all will be fine.  However I really would like to keep the history of the physical so I can compare its historical performance to the new virtual machine.  Is there a way to merge the two instances together?