diff --git a/modules/enterprise_content/enterprise_content.module b/modules/enterprise_content/enterprise_content.module
index 52b44a0..7926cc7 100755
--- a/modules/enterprise_content/enterprise_content.module
+++ b/modules/enterprise_content/enterprise_content.module
@@ -13,7 +13,7 @@ include_once('enterprise_content.features.inc');
  * hook after a feature is installed. Ideally this can be fixed at some point.
  */
 function enterprise_content_init() {
-  if (!variable_get('enterprise_content_installed', FALSE) && defaultcontent_get_default('home')) {
+   if (!variable_get('enterprise_content_installed', FALSE) && defaultcontent_get_default('home')) {
     // Set the site home page.
     $nid = defaultcontent_get_default('home');
     if ($nid) {
@@ -39,8 +39,12 @@ function enterprise_content_init() {
 
     // Enable some default blocks.
     $default_theme = variable_get('theme_default', 'navin');
+    $primary_keys = array();
+    $primary_keys[] = 'bid';
+
     $values = array(
-      array(
+     array(
+        'bid' => enterprise_content_get_bid('menu-legal-notices',$default_theme),
         'module' => 'menu',
         'delta' => 'menu-legal-notices',
         'theme' => $default_theme,
@@ -52,6 +56,7 @@ function enterprise_content_init() {
         'cache' => -1,
       ),
       array(
+        'bid' => enterprise_content_get_bid('menu-social',$default_theme),
         'module' => 'menu',
         'delta' => 'menu-social',
         'theme' => $default_theme,
@@ -62,7 +67,8 @@ function enterprise_content_init() {
         'pages' => '',
         'cache' => -1,
       ),
-      array(
+    array(
+        'bid' => enterprise_content_get_bid('oe1',$default_theme),
         'module' => 'boxes',
         'delta' => 'oe1',
         'theme' => $default_theme,
@@ -74,6 +80,7 @@ function enterprise_content_init() {
         'cache' => -2,
       ),
       array(
+        'bid' => enterprise_content_get_bid('oe2',$default_theme),
         'module' => 'boxes',
         'delta' => 'oe2',
         'theme' => $default_theme,
@@ -85,6 +92,7 @@ function enterprise_content_init() {
         'cache' => -2,
       ),
       array(
+        'bid' => enterprise_content_get_bid('oe3',$default_theme),
         'module' => 'boxes',
         'delta' => 'oe3',
         'theme' => $default_theme,
@@ -96,6 +104,7 @@ function enterprise_content_init() {
         'cache' => -2,
       ),
       array(
+        'bid' => enterprise_content_get_bid('oe_rotating_banner-block3',$default_theme),
         'module' => 'views',
         'delta' => 'oe_rotating_banner-block',
         'theme' => $default_theme,
@@ -108,9 +117,30 @@ function enterprise_content_init() {
       ),
     );
     foreach ($values as $record) {
-      drupal_write_record('block', $record);
+      if ($record['bid'] === null) {
+         drupal_write_record('block', $record );
+      } else
+      {
+         drupal_write_record('block', $record, $primary_keys );
+      }
     }
-
     variable_set('enterprise_content_installed', TRUE);
   }
+}
+
+/**
+ *
+ * Get key for block records which have already been created.
+ */
+function enterprise_content_get_bid($delta, $theme) {
+ $value = null;
+ $result = db_query("SELECT bid FROM block
+                  WHERE delta = :delta
+                  AND theme = :theme",
+                  array(':delta'=>$delta,':theme'=>$theme,))
+                 ->fetch();
+ if ($result) {
+   $value = $result->bid;
+   }
+ return $value;
 }
\ No newline at end of file