how to synch contacts in win live mail on two computers

I use Win Live mail on the desktop and on the laptop. Each connects with a gmail account. All the email and folders are updated on both the desktop and the laptop.  When reading the MS info it says that if you sign in with your win live mail ID the contacts are synchronized. I do sign in with my win live mail id and I when I am viewing my contacts I can CLEAN UP the contacts which utilizes my microsoft account. It looks like the contacts get synchronized every once in awhile for I sure haven't added over 600 contacts on each of the computers. But how do I force a synch?  I have just added another group of 60 people on my desktop and want them to appear on my laptop. So far they haven't synched. I know I can do an import/export but I want to have it automatic. Any solutions???