Set and get store data Odoo with TransientModel
<p>I'm trying to store config data in odoo, I need to store 3 reference to 'account.journal'. 
The model is created in database, the view is shown in configuration base menu, the data is store in database when I push the APPLY button BUT when I reload the menu the data is not shown </p>

<p>The code use:</p>

<pre><code>from openerp import fields, models, osv, api, _

class Configuration(models.TransientModel):
    _inherit = 'res.config.settings'
    _name = 'transporte_carta_de_porte.config.settings'

    ft_mercaderia = fields.Many2one(
        'account.journal',string='Debito ft mercaderia',
        help="Diario de ajuste al transportista por faltante de mercaderia")
    ade_transportista = fields.Many2one(
        'account.journal',string='Debito por adelanto transportista',
        help="Diario de debito al transportista por faltante de adelanto")
    ade_proveedor = fields.Many2one(
        'account.journal',string='Debito por adelanto proveedor',
        help="Diario de debito por adelanto en la cuenta del proveedor de combustible",)
</code></pre>

<p>The layout</p>

<pre><code>&lt;record id="view_tcp_config_settings" model="ir.ui.view"&gt;
    &lt;field name="name"&gt;TCP settings&lt;/field&gt;
    &lt;field name="model"&gt;transporte_carta_de_porte.config.settings&lt;/field&gt;
    &lt;field name="arch" type="xml"&gt;
        &lt;form string="TCP settings" class="oe_form_configuration"&gt;
            &lt;sheet&gt;
                &lt;div&gt;
                    &lt;button string="Apply" type="object" name="execute" class="oe_highlight" /&gt;
                    or
                    &lt;button string="Cancel" type="object" name="cancel" class="oe_link" /&gt;
                &lt;/div&gt;
                &lt;group string="Journals Settings"&gt;
                    &lt;field name="ft_mercaderia" /&gt;
                    &lt;field name="ade_transportista" /&gt;
                    &lt;field name="ade_proveedor" /&gt;
                &lt;/group&gt;
            &lt;/sheet&gt;
        &lt;/form&gt;
    &lt;/field&gt;
&lt;/record&gt;

&lt;record id="action_tcp_configuration" model="ir.actions.act_window"&gt;
    &lt;field name="name"&gt;TCP Configuration&lt;/field&gt;
    &lt;field name="res_model"&gt;transporte_carta_de_porte.config.settings&lt;/field&gt;
    &lt;field name="priority" eval="50" /&gt;
    &lt;field name="view_mode"&gt;form&lt;/field&gt;
    &lt;field name="target"&gt;inline&lt;/field&gt;
&lt;/record&gt;

&lt;menuitem id="menu_tcp_config" name="TCP Settings" parent="base.menu_config" action="action_tcp_configuration" /&gt;
</code></pre>

<p>Every time I choose a value for the fields and push Apply a new record is created insted of modify the first created and no one is load on the view load.
Thanks for reading!</p>