I forgot to mention that if you're using WLM with the "sign-in" feature, your contacts are being saved at contacts.live.com and will repopulate your new clean version of your contact list. So to truely start over, do not reopen WLM in the "sign-in" mode until you first go to the website and delete all the contacts there as well. So to sum up the start-over process for contacts, with the program WLM closed, delete the contacts on the website AND your local folder "Windows Live Contacts" in either order and then when you reopen WLM it will be clean of all contacts, ready to try a new import.