Relocate the fields between parent-child node form groups

Thanks for the awesome module.

I am trying the accomplish this :

I am using an Inline entity form with a Single value which embeds the referenced node on editing. I am trying to relocate/move some fields from that reference form to parent node's field groups.

In my code , moy_module_form_alter(&$form, &$form_state, $form_id) {
...

$form['#group_children']['field_from_referenced_node'] = 'group_field_on_parent_node';

}

above code does not work for me. What should I do?

Best Regards