diff --git a/core/modules/locale/lib/Drupal/locale/PoDatabaseWriter.php b/core/modules/locale/lib/Drupal/locale/PoDatabaseWriter.php
index eb02890..4c8b254 100644
--- a/core/modules/locale/lib/Drupal/locale/PoDatabaseWriter.php
+++ b/core/modules/locale/lib/Drupal/locale/PoDatabaseWriter.php
@@ -102,7 +102,6 @@ function setReport($report = array()) {
       'updates' => 0,
       'deletes' => 0,
       'skips' => 0,
-      'strings' => array(),
     );
     $this->_report = $report;
   }
@@ -259,7 +258,6 @@ private function importString(PoItem $item) {
           $string->save();
           $this->_report['updates']++;
         }
-        $this->_report['strings'][] = $string->getId();
         return $string->lid;
       }
       else {
@@ -274,7 +272,6 @@ private function importString(PoItem $item) {
         ))->save();

         $this->_report['additions']++;
-        $this->_report['strings'][] = $string->getId();
         return $string->lid;
       }
     }
@@ -282,7 +279,6 @@ private function importString(PoItem $item) {
       // Empty translation, remove existing if instructed.
       $string->delete();
       $this->_report['deletes']++;
-      $this->_report['strings'][] = $string->lid;
       return $string->lid;
     }
   }
diff --git a/core/modules/locale/locale.bulk.inc b/core/modules/locale/locale.bulk.inc
index 64d2c55..5420ac9 100644
--- a/core/modules/locale/locale.bulk.inc
+++ b/core/modules/locale/locale.bulk.inc
@@ -543,7 +543,7 @@ function locale_translate_batch_import_save($context) {
 function locale_translate_batch_finished($success, $results) {
   if ($success) {
     $additions = $updates = $deletes = $skips = 0;
-    $strings = $langcodes = array();
+    $langcodes = array();
     if (isset($results['failed_files'])) {
         if (module_exists('dblog')) {
           $message = format_plural(count($results['failed_files']), 'One translation file could not be imported. <a href="@url">See the log</a> for details.', '@count translation files could not be imported. <a href="@url">See the log</a> for details.', array('@url' => url('admin/reports/dblog')));
@@ -566,10 +566,8 @@ function locale_translate_batch_finished($success, $results) {
           if ($report['skips'] > 0) {
             $skipped_files[] = $filepath;
           }
-          $strings = array_merge($strings, $report['strings']);
         }
-        // Get list of unique string identifiers and language codes updated.
-        $strings = array_unique($strings);
+        // Get list of unique language codes updated.
         $langcodes = array_unique(array_values($results['languages']));
       }
       drupal_set_message(format_plural(count($results['files']),
@@ -590,10 +588,8 @@ function locale_translate_batch_finished($success, $results) {
         watchdog('locale', '@count disallowed HTML string(s) in files: @files.', array('@count' => $skips, '@files' => implode(',', $skipped_files)), WATCHDOG_WARNING);
       }

-      if ($strings) {
-        // Clear cache and force refresh of JavaScript translations.
-        _locale_refresh_translations($langcodes, $strings);
-      }
+      // Clear cache and force refresh of JavaScript translations.
+      _locale_refresh_translations($langcodes);
     }
   }
 }
diff --git a/core/modules/locale/locale.module b/core/modules/locale/locale.module
index c8ccc37..ce226bb 100644
--- a/core/modules/locale/locale.module
+++ b/core/modules/locale/locale.module
@@ -1028,12 +1028,14 @@ function locale_string_is_safe($string) {
  * @param array $langcodes
  *   Language codes for updated translations.
  * @param array $lids
- *   List of string identifiers that have been updated / created.
+ *   (optional) List of string identifiers that have been updated / created.
+ *   If not provided, all caches for the affected languages are cleared.
  */
-function _locale_refresh_translations($langcodes, $lids) {
-  if ($lids && $langcodes) {
-    // Update javascript translations if any of the strings has a javascript location.
-    if ($strings = locale_storage()->getStrings(array('lid' => $lids, 'type' => 'javascript'))) {
+function _locale_refresh_translations($langcodes, $lids = array()) {
+  if (!empty($langcodes)) {
+    // Update javascript translations if any of the strings has a javascript
+    // location, or if no string ids were provided, update all languages.
+    if (empty($lids) || ($strings = locale_storage()->getStrings(array('lid' => $lids, 'type' => 'javascript')))) {
       array_map('_locale_invalidate_js', $langcodes);
     }
   }