How can I restore posts from 'trash' with their previous post_status? - Wordpress

I have a Custom post type in wordpress in which when creating a new post 3 child subposts are created automatically. For example, I create the post and assign it some status 'Publish', 'pending', 'draft' or another:

Post Company 1

-Subpost 1 (it is created automatically)  
-Subpost 2 (it is created automatically)  
-Subpost 3 (it is created automatically)

Removing the parent (moves to 'trash' ) will also remove the subposts. But when you restore them, they should be in the state they were saved in before ('pending', 'draft', 'auto-draft' or something else).

How could I do that to restore the posts (parent and children) with their 'post-status' that they had defined before being moved to 'trash'?

This is my code that I am using to create the 3 child subposts automatically:

function add_children_custom_post_type( $post_id ) {
if ( defined( 'DOING_AUTOSAVE' )  DOING_AUTOSAVE )
    return;

if ( !wp_is_post_revision( $post_id )  'companies' == get_post_type( $post_id )  'publish' == get_post_status( $post_id ) ) {
    $show = get_post( $post_id );
    if( 0 == $show-post_parent ){
        $children = get_children(
            array(
                'post_parent' = $post_id,
                'post_type' = 'companies'
            )
        );
        if( empty( $children ) ){
            //Children pages
            $titles = ['Subpost1', 'Subpost2', 'Subpost3'];
            foreach ($titles as $key=$title) {
                $child = array(
                    'post_type' = 'companies',
                    'post_title' = $title,
                    'post_content' = '',
                    'post_status' = 'publish',
                    'post_parent' = $post_id,
                    'post_author' = get_post_field('post_author', $post_id),
                    'menu_order' = $key
                );
                wp_insert_post( $child );
            }
        }
     }
  }
}
add_action( 'save_post', 'add_children_custom_post_type' );

And this is the one I use to move the child posts of a parent post when the parent is deleted:

// Move to Trash
function trash_post_children($post_id) {
$parent_ID = $post_id;

$args = array(
    'post_type' = 'companies',
    'post_parent' = $parent_ID,
    'posts_per_page' = -1,
    'post_status' = array('publish', 'pending', 'draft', 'auto-draft', 'future', 'private', 'inherit', 'trash')
);
  $children = get_posts($args);
  if($children) {
      foreach($children as $p){
        wp_trash_post($p-ID, true);
      }
   }
}
add_action('trashed_post', 'trash_post_children');

And this other one is to restore the posts but they are always restored in 'draft' state:

// RestorePost
function restore_post_children($post_id) {
   $parent_ID = $post_id;
    $args = array(
       'post_type' = 'companies',
       'post_parent' = $parent_ID,
       'posts_per_page' = -1,
       'post_status' = 'trash'
   );
   $children = get_posts($args);
   if($children) {
    foreach($children as $p) {
        wp_untrash_post($p-ID);
    }
  }
}
add_action('untrash_post', 'restore_post_children');