I have imported into my Mac in Outlook 2011 all my old .pst files from Outlook, used Mac for a while, and now willing to switching back to a Windows OS...
Another good solution for migrating emails from Mac Outlook to Windows Outlook is Kernel for OLM to PST Conversion software which has the ability to repair corrupt OLM files also. More information about the tool can be found at http://www.olmtopstconversion.com