How I can schedule a backup of WLM's contacts ?

[evvivame]

Hi,
This is my configutation:

Windows 7 Enterprise 6.1 Build 7601 SP1
Windows Live Mail 2011 Build 15.4.3538.0513

My problem is how I can make NOT MANUALLY ( such a scheduled task with Winzip ecc. ecc. ) a backup of the contacts

For example, I tryed with these steps :

1. With KLS Mail Backup v.1.9.8.0 I backup with profile “Windows Live Mail”
2. I create a new contact like aaaa@bbbb.it
3. I restore the backupd created at the point 1.

but ...i see again aaaa@bbbb.it !! Why the old contacts file isn't replace ?

Thanks !!!!
Luciana