diff --git b/entityreference.module a/entityreference.module
index cc30a34..1db0670 100644
--- b/entityreference.module
+++ a/entityreference.module
@@ -243,6 +243,34 @@ function entityreference_field_validate($entity_type, $entity, $field, $instance
  * Adds the target type to the field data structure when saving.
  */
 function entityreference_field_presave($entity_type, $entity, $field, $instance, $langcode, &$items) {
+  if (!empty($field['settings']['handler_settings']['lock_revision'])) {
+    $dest_entity_type = $field['settings']['target_type'];
+    if (isset($entity->original)) {
+      $original_items = field_get_items($entity_type, $entity->original, $field['field_name']);
+    }
+    else {
+      $ids = entity_extract_ids($entity_type, $entity);
+      $original = entity_load_unchanged($entity_type, $ids[0]);
+      $original_items = field_get_items($entity_type, $original, $field['field_name']);
+    }
+    foreach ($items as $key => $val) {
+      $ref_entity = entity_load_single($dest_entity_type, $val['target_id']);
+      $ref_ids = entity_extract_ids($dest_entity_type, $ref_entity);
+      // find the original item, which does not have the same delta per se.
+      $original_revision = FALSE;
+      foreach ($original_items as $original_item) {
+        if ($original_item['target_id'] == $val['target_id']) {
+          $original_revision = isset($original_item['revision_id']) ? $original_item['revision_id'] : FALSE;
+        }
+      }
+      if (isset($ref_ids[1]) && is_numeric($ref_ids[1]) && !$original_revision) {
+        $items[$key]['revision_id'] = $ref_ids[1];
+      }
+      else if ($original_revision) {
+        $items[$key]['revision_id'] = $original_revision;
+      }
+    }
+  }
   // Invoke the behaviors.
   foreach (entityreference_get_behavior_handlers($field, $instance) as $handler) {
     $handler->presave($entity_type, $entity, $field, $instance, $langcode, $items);