I have lost this command. I got a new PC with windows 7, reinstalled autocad and the service packs, and it is no longer there. I used to be able to right-click a block and the shortcut menu would have a "Copy block definition and assign command" This would turn that instance of a block an identical block with a new name.
This is a great command that I no longer have. I have tried typing "copyblockdefandassign" as well to no avail.
PLease help me get it back.