If any other/alternate identities were ever set up, you'll need to sort that out. (just note that in 10.10 the Office 2011 prefs are stored in /Library/Application Support/Microsoft rather than /Library/Preferences - but you shouldn't need those, or might not). The Outlook for Mac identity is stored in Users//Documents/Microsoft User Data/Office 2011 Identities/Main Identity
Well, the Migration Assistant is a Very Nice Idea but I don't use it because I've seen it mess up too much, too many times.
