This file add the attributes, weight and mlid to drupal menu_import. This is based on the version 1.5 of menu_import and this fix most likely will be useless on the next release as the options as been added to the current master branch. Do not use for other things than menu_import version 1.5 for Drupal 7.

add_menu_attributes.patch

From f53c22fb9c3862c0ec11040f079b2ab37ec85c61 Mon Sep 17 00:00:00 2001
From: Hugues Lamy <[email protected]>
Date: Wed, 9 Oct 2013 13:35:28 -0400
Subject: [PATCH] Add check to avoid including null attributes in menu_links

---
 includes/import.inc | 39 ++++++++++++++++++++++++++++++---------
 1 file changed, 30 insertions(+), 9 deletions(-)

diff --git a/includes/import.inc b/includes/import.inc
index fec321b..7389a50 100644
--- a/includes/import.inc
+++ b/includes/import.inc
@@ -153,6 +153,7 @@ function menu_import_parse_line($line, $prev_level, array $weights, array $paren
     'weight' => 0,
     'external' => FALSE,
     'level' => 0,
+    'mlid' => 0,
   );
 
   // Set default language
@@ -162,6 +163,7 @@ function menu_import_parse_line($line, $prev_level, array $weights, array $paren
   $langs = array_keys(language_list());
 
   $path = $description = $expanded = $hidden = $language = '';
+  $attributes = null;
 
   // JSON is used.
   // @todo: make the input JSON not so strict.
@@ -181,6 +183,15 @@ function menu_import_parse_line($line, $prev_level, array $weights, array $paren
       $hidden = !empty($details->hidden);
       $language = !empty($details->lang) && in_array($details->lang, $langs)
                     ? $details->lang : NULL;
+      $mlid = !empty($details->mlid) ? $details->mlid : 0;
+      $weight = isset($details->weight) ? $details->weight : null;
+      if (!empty($details->attributes)) {
+        foreach ((array)$details->attributes as $attribute) {
+          foreach($attribute as $attr_key => $attr_value) {
+            $attributes[$attr_key] = $attr_value;
+          }
+        }
+      }
     }
     else {
       return _menu_import_mark_error_item($menuitem, t('malformed item details'), $line);
@@ -208,22 +219,29 @@ function menu_import_parse_line($line, $prev_level, array $weights, array $paren
     return _menu_import_mark_error_item($menuitem, t('wrong indentation'), $line);
   }
 
-  if (isset($weights[$level])) {
-    if ($level > $prev_level) {
-      $weight = 0;
+  if (is_null($weight)) {
+    if (isset($weights[$level])) {
+      if ($level > $prev_level) {
+        $weight = 0;
+      }
+      else {
+        $weight = $weights[$level] + 1;
+      }
     }
     else {
-      $weight = $weights[$level] + 1;
+      $weight = 0;
     }
   }
-  else {
-    $weight = 0;
-  }
   $menuitem['weight'] = $weight;
   $menuitem['parent'] = !$level ? 0 : $parents[$level - 1];
   $menuitem['link_title'] = $title;
   $menuitem['level'] = $level;
   $menuitem['path'] = $path;
+  $menuitem['mlid'] = $mlid;
+  
+  if (!is_null($attributes)) {
+    $menuitem['options']['attributes'] = $attributes;
+  }
 
   if (url_is_external($path)) {
     $menuitem['external'] = TRUE;
@@ -249,7 +267,6 @@ function menu_import_parse_line($line, $prev_level, array $weights, array $paren
     // Important when setting the language, otherwise it'll be ignored.
     $menuitem['customized'] = 1;
   }
-
   return $menuitem;
 }
 
@@ -481,7 +498,11 @@ function menu_import_save_menu($menu, $options) {
       if (isset($menuitem['description'])) {
         $menuitem['options']['attributes']['title'] = $menuitem['description'];
       }
-
+      
+      // Save a blank menu_link if mlid is declared in order to force an update at this value.
+      if ($menuitem['mlid'] != 0) {
+        db_insert('menu_links')->fields(array('mlid' => $menuitem['mlid']))->execute();
+      }
       // Save menuitem and set mlid.
       $mlid = menu_link_save($menuitem);
       if (!$mlid) {
-- 
1.8.1.2