DMZ 1.7.1 (DataMapper OverZealous Edition)

[eluser]BrainFeeder[/eluser]
I have troubles getting/deleting related data when the tables are in different databases.

Code:

class Company extends DataMapper {

var $model = 'company';
var $table = 'companies';
var $prefix = "tbl_";

var $db_params = 'superadmin';

var $has_many = array('user');
....

Code:

class User extends DataMapper {

var $model = 'user';
var $table = 'users';
var $prefix = "app_";

var $db_params = 'default';

var $has_one = array('company');
...

Now when I try to get the related company from a user like this:

Code:

...
if($u->login()) {
  $u->company->get();
  $cid = $u->company->id;
...
}
...

I get the error : "Table does not exist".
Datamapper looks for the users table in the database where the companies table is while I've set different db_params for both models.

Did I forget something? Or doesn't datamapper support cross database joins?