A few questions about save/restore config

[Emmanuel <e allaud wanadoo fr>]

	Hi all,
I had no answer for the question of using or not gnome_config scheme to 
save/restore filters so I assume I have to use it :)
I saw two really different ways to use gnome_config scheme in 
src/save-restore.c : one for identities and the other for address-books 
(this one uses gnome_config_iterator). Which is the "canonic/best" way 
to use gnome_config to save a list of something (filters in my case) ?
Another question : when are we supposed to call gnome_config_sync (it 
seems called often when saving address-books, and never when saving 
identities!!)?
Thanks
Manu