[turba] problem of upgrade turba from 2.1.7 to 2.2

[David Chang]

After upgrade localsql backend from 2.1.7 to 2.2,some of prefences did  
not work/map successfully,eg.  
imp[search_source],imp[search_fields],turba[addressbooks]. For  
example, after run done 2007-06-17_flatten_shares.php ,and login to  
horde-3.2,the imp[search_source] preference looks like this:
pref_uid  pref_scope  pref_name    pref_value
========  ==========  =========    ==========
user_a    turba       addressbooks localsql
                                    local_ldap
                                    localsql:dd38b1b284f79796351d0c5fda5fd80f
                                    localsql:55dae36c62c8e10ef9583cf522299ff1

However,as i know,if it work ,that should be,
pref_uid  pref_scope  pref_name    pref_value
========  ==========  =========    ==========
user_a    turba       addressbooks user_a
                                    local_ldap
                                    dd38b1b284f79796351d0c5fda5fd80f
                                    55dae36c62c8e10ef9583cf522299ff1

FYI,here are the turba's conf.php :
$conf['client']['addressbook'] = 'localsql';
$conf['shares']['source'] = 'localsql';

What else am i miss in the upgrade step ?