Moving from 2009 to 2010.07 has not been easy.
I have stumbled around all afternoon and have gotten my old emails and directories. I will learn to live without calendar entries and notes but need to get the "contacts" or address book data imported or transfer the file over.
I first tried to simply copy (from my backup of /home before the reformat) certain files that I thought contained the contact information. The old directories named Kaddressbookrc and Kaddressbook would not copy and didn't seem to have anything in them anyway. I also read from the KDE web site something about the config files are now different b/t .kde4 and .kde and therefore a copy would not work anymore anyway. Great news

There is an "assistant" in the KDE4 Kontact that appears to be designed to help. I can select a "Vcard" file to import however it defaults to a new .KDE4 file path and my address book is still on the external HD somewhere in the .KDE directory. (Since we were told to do a clean install this time and reformat the old /home)
Can anyone help with the directory or file name I should be looking for within .kde to use to see if I can let the "Akonadi" personal information data setup do it's thing and hopefully get the addresses moved over?
I'll even chase after a wild guess at this point.
In addition to the above, there is an "import" feature that request a file name to import (CSV, Vcard, GMX). I don't see any of these files but I mention it in case this thread developes into something that might help others down the road.