diff --git a/reference_option_limit.module b/reference_option_limit.module
index d54aa0a..cd448bc 100644
--- a/reference_option_limit.module
+++ b/reference_option_limit.module
@@ -284,6 +284,8 @@ function reference_option_limit_form_alter(&$form, &$form_state, $form_id) {
             $field['fields_match']
           )) {
         $match = TRUE;
+        // Identify all fields affected by the triggering element.
+        $triggering_chain = reference_option_limit_triggering_chain($form_state['triggering_element']['#field_name'], $form_state['reference_option_limit']);
         break;
       }
     }
@@ -482,6 +484,13 @@ function reference_option_limit_form_alter(&$form, &$form_state, $form_id) {
         '@fields' => implode(', ', $matching_field_labels),
       ));
     }
+    // If this field is affected by the triggering element,
+    // set a value in form_state.
+    if (!empty($triggering_chain[$field_name_option_limited])) {
+      reset($options_limited);
+      $form_state['input'][$field_name_option_limited][LANGUAGE_NONE] = key($options_limited);
+      $form_state['values'][$field_name_option_limited][LANGUAGE_NONE][0]['tid'] = key($options_limited);
+    }
 
     // Set the new options into the form element.
     $form[$field_name_option_limited][LANGUAGE_NONE]['#options'] = $options_limited;
@@ -534,14 +543,26 @@ function reference_option_limit_js($form, $form_state) {
     $return['#commands'][] = ajax_command_replace($selector, $html);
   }
   // Next add the rendered fields.
-  foreach ($form_state['reference_option_limit'] as $settings) {
+  $triggering_chain = reference_option_limit_triggering_chain($field_name_triggering, $form_state['reference_option_limit']);
+  foreach ($triggering_chain as $settings) {
+    $selector = '#' . $settings['ajax_wrapper'];
+    $html = render($form[$settings['field']]);
+    $return['#commands'][] = ajax_command_replace($selector, $html);
+  }
+  return $return;
+}
+
+/**
+ * Get all fields affected by the triggering element.
+ */
+function reference_option_limit_triggering_chain($field_name_triggering, &$reference_option_limit_settings, $field_names = array()) {
+  foreach ($reference_option_limit_settings as $settings) {
     if (!empty($settings['fields_match'][$field_name_triggering])) {
-      $selector = '#' . $settings['ajax_wrapper'];
-      $html = render($form[$settings['field']]);
-      $return['#commands'][] = ajax_command_replace($selector, $html);
+      $field_names[$settings['field']] = $settings;
+      $field_names += reference_option_limit_triggering_chain($settings['field'], $reference_option_limit_settings, $field_names);
     }
   }
-  return $return;
+  return $field_names;
 }
 
 /**