Hi,
The steps to replace a CM hardware have been documented under the following bug:
http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCtz47138
Basically, the steps are the following:
If the CM will be using the same hardware and IP you can restore the CMS database.
If the CM will be using a new name or IP, use the workaround provided by CSCsi59886:
1- Add new CM as standby
2- Make it primary
3- deactivate former CM in new CM GUI
4- delete former CM from new CM GUI (and make sure it s gone from the DB)
5- 'cms deregister' on former CM CLI
7- rename former CM, change its mode and reload.
8- rename the new primary and change its IP address
9- Change the IP and mode of former CM and register it
Regards,
Nicolas