Here is another un-documented bug on doing a restore of an Exchange 2007 server:
I was doing a /M:recoverserver on an Exchange 2007 server that had failed. The server had Service Pack 1 installed for Exchange.
When doing the recover (after I re-installed the OS of course) the recover program complained about some registry entries not being there when it was recovered the Hub Transport role. Truly interesting as I was recovering this service!!
It complained that these keys did not exist:
Simple enough though to move forward...
Just create the keys and then redo the /M:recoverserver and all will be well!