diff -u b/core/modules/breakpoint/breakpoint.module b/core/modules/breakpoint/breakpoint.module
--- b/core/modules/breakpoint/breakpoint.module
+++ b/core/modules/breakpoint/breakpoint.module
@@ -140,42 +140,22 @@
 function _breakpoint_import_breakpoints($label, $id, $source_type, $media_queries) {
   if (!empty($media_queries)) {
     $weight = 0;
-    // Use the existing breakpoint group if it exists.
-    $breakpoint_group = entity_load('breakpoint_group', $source_type . '.' . $id);
-    if (!$breakpoint_group) {
-      // Build a new breakpoint group.
-      $breakpoint_group = new BreakpointGroup();
-      $breakpoint_group->id = $id;
-      $breakpoint_group->label = $label;
-      $breakpoint_group->source = $id;
-      $breakpoint_group->sourceType = $source_type;
-    }
-    else {
-      // Reset label.
-      $breakpoint_group->label = $label;
-    }
+    // Build a breakpoint group.
+    $breakpoint_group = new BreakpointGroup();
+    $breakpoint_group->id = $id;
+    $breakpoint_group->label = $label;
+    $breakpoint_group->source = $id;
+    $breakpoint_group->sourceType = $source_type;
     foreach ($media_queries as $name => $media_query) {
-      // Use the existing breakpoint if it exists.
-      $breakpoint = entity_load('breakpoint', $source_type . '.' . $id . '.' . $name);
-      if (!$breakpoint) {
-        // Build a new breakpoint.
-        $breakpoint = new Breakpoint;
-        $breakpoint->name = $name;
-        $breakpoint->label = drupal_ucfirst($name);
-        $breakpoint->mediaQuery = $media_query;
-        $breakpoint->source = $id;
-        $breakpoint->sourceType = $source_type;
-        $breakpoint->status = TRUE;
-        $breakpoint->weight = $weight++;
-        $breakpoint->save();
-      }
-      else {
-        // Reset name, label, weight and media query.
-        $breakpoint->name = $name;
-        $breakpoint->label = drupal_ucfirst($name);
-        $breakpoint->mediaQuery = $media_query;
-        $breakpoint->weight = $weight++;
-      }
+      $breakpoint = new Breakpoint;
+      $breakpoint->name = $name;
+      $breakpoint->label = drupal_ucfirst($name);
+      $breakpoint->mediaQuery = $media_query;
+      $breakpoint->source = $id;
+      $breakpoint->sourceType = $source_type;
+      $breakpoint->status = TRUE;
+      $breakpoint->weight = $weight++;
+      $breakpoint->save();
       $breakpoint_group->breakpoints[$breakpoint->id()] = $breakpoint;
     }
     return $breakpoint_group;
@@ -199,28 +179,15 @@
     foreach ($breakpoint_groups->get() as $id => $data) {
       // Breakpoints is mandatory.
       if (isset($data['breakpoints']) && !empty($data['breakpoints'])) {
-        // Use the existing breakpoint group if it exists.
-        $breakpoint_group = entity_load('breakpoint_group', $source_type . '.' . $id);
-        if (!$breakpoint_group) {
-          $breakpoint_group = new BreakpointGroup();
-          $breakpoint_group->sourceType = $source_type;
-          $breakpoint_group->source = $group_id;
-          $breakpoint_group->id = $id;
-          if (isset($data['label']) && !empty($data['label'])) {
-            $breakpoint_group->label = $data['label'];
-          }
-          else {
-            $breakpoint_group->label = drupal_ucfirst($data['label']);
-          }
+        $breakpoint_group = new BreakpointGroup();
+        $breakpoint_group->sourceType = $source_type;
+        $breakpoint_group->source = $group_id;
+        $breakpoint_group->id = $id;
+        if (isset($data['label']) && !empty($data['label'])) {
+          $breakpoint_group->label = $data['label'];
         }
         else {
-          // Reset label.
-          if (isset($data['label']) && !empty($data['label'])) {
-            $breakpoint_group->label = $data['label'];
-          }
-          else {
-            $breakpoint_group->label = drupal_ucfirst($data['label']);
-          }
+          $breakpoint_group->label = drupal_ucfirst($data['label']);
         }
         foreach ($data['breakpoints'] as $breakpoint_id => $multipliers) {
           // Check if breakpoint exists, assume short name.