That is not easy to migrate contacts to another account. Almost painful to figuring out how to do it, because of live.com gui and MS law. If your contact list larger than 70 contacts your migration takes a long as contacts count/70 days. According to MS law you can send invitation to 70 persons per day. I can’t find any way to migrate whole contacts in one basic step. But, I can show you how you can migrate your contacts as quick as possible without lost in live.com account menus.
Now lets login to your account where contact list available in.
Then went to “Messenger” with your mouse on top of the screen. That move opens Messenger Menu and click on “Contacts”.
Now move on to “Manage” to open Manage Menu then click “Export”. Save the file to your computer, and log out from this account.
It’s time to log in new account. When you logged in repeat the moves above until Manage Menu opens. On Manage Menu click “Import”. When you click import live.com redirect you to another page.
Now click on “Another Windows Live account” under “Add people from.