Add a node(new page) automatically, when a new scholar site is created

I need to create a new default node(os page) as scholar site frontpage, when teacher registers a new site. I'm trying to achieve this by coding and adding a new node to the site.
I'm using SCHOLAR-3.4.x

So far i have modified the vsite_register.form.inc.

around line 295 where is - if ($vsite = vsite_create_vsite(...
inside that IF case i've written the following code:

// Prepares basic settings of our new node
$homenode  = new stdClass();
$homenode->type = 'page';
$homenode->uid = $site_owner->uid;
$homenode->language = 'en';
$homenode->title = t('Node title');
$homenode->body[$homenode->language][0]['value']   = t('Node content text');
$homenode->body[$homenode->language][0]['format']  = 'filtered_html';
$homenode->status = 1;
$homenode->comment = 1;
$homenode->active = 1;

// Adds $node->nid and more properties
if ($homenode = node_submit($homenode)) {
    node_save($homenode);
}    
// Loads newly created node and adds to vsite.
$homenode = node_load($homenode->nid);
vsite_add_entity($homenode, 'node', $vsite);

//Add menu link
$item = array(
    'link_path' => 'node/'.$homenode->nid,
    'menu_name' => 'primary-menu',
    'link_title' => $homenode->title,        
    'options' => array(),
    'language' => 'en'
);
vsite_menu_menu_link_save($item, $vsite);

//Default homepage change to latest inserted node
$default_frontpage = db_insert('spaces_overrides') // Table name no longer needs {}
->fields(array(
  'type' => 'og',
  'id' => $node->nid,
  'object_type' => 'variable',
  'object_id' => 'site_frontpage',
  'value' => serialize('node/'.$homenode->nid)
))
->execute();

So basically this code works. Upon creating a new site, a default page node is being added as front page and also inserted into the primary menu.

From here on, it gets weird.. When i go to view cp/content the page is listed and if i update the page, then its not listed anymore in cp/content view.
For some reason the node gets thrown out of og_membership table and thats why it is not listed anymore. I just cannot figure out why it gets deleted from og_membership table or which code calls the DELETE FROM og_membership ... function. Probably i am missing something in the automatic node generation...

Could someone please give me any suggestion how to fix it? Or maybe this can be done more easily by modifying the space_preset? Any help please?