Lost Data with upgrade to Exchange

Hi. I hope someone can help. I use Outlook 2007 as my client to handle multiple email accounts from the same server. Recently, I upgraded one of those email accounts to become an exchange account. As part of the processing of the exchange account, I had to run a profile generator so the account information could automatically be set up in outlook. To my chagrin, when that was done, all of my other email accounts along with messages, contacts, calendar items, etc. disappeared. What bugs me is that at no point during the profile generation/set up process was I warned this might happen. Have I really lost all that data or is there a way to retrieve it? I would really appreciate any help with this. Thanks.