Try to edit a post...most hooks are not called

Hello,
I am trying to edit post data with gravity forms.
I want to have for example one custom type post "contact", that holds the complete information
of a contact. I created an extra "Contact Page"-Template, that contains the Gravity form for the contact. To show the form on this page I created the function "showBEForm($form_type)". $form_type is the ID of the contact form. This function is called from my page-template. Pre populating the data with the "gform_pre_render"-filter works correctly. But all other actions or filters (gform_pre_submission, gform_disable_post_creation, gform_pre_submission) are never called.
So I always get an extra contact-post by pressing submit and I am not able to edit the existing one.
You can find the sourcecode at http://www.pastie.org/3380707.
I really hope you can help me.

Hi Dana,
thanks for your answer. It helped me a lot.
I put all the addFilter and addAction stuff in the functions.php of my theme. Now it works.
All the hooks are called.
Pre populating forms with posts and editing them now works really charming with custom post fields.
I just have a problem with multiple input fields like the advanced "address" field.
I am not able to pre populate such multiple fields.
I use the following code in my pre populate hook:

function populate_data($form)
{
foreach ($form['fields'] as &$field) {
if($field['inputName']!=null){
$field['defaultValue']=get_post_meta($Post_ID,$post_data_name,true);
}
if($field['inputs']){
foreach($field['inputs'] as $input){
//is it possible to set a default value in here to set value for e.g. advanced address fields

}
}
}

return $form;
}

Perhaps you can give me a hint how to pre populate such fields.