From 26e545e8624c2c9a5cb32375df26181ac95a0120 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nil=20Portugu=C3=A9s=20Calder=C3=B3?= <nilopc@gmail.com>
Date: Sun, 6 Dec 2015 00:11:16 +0100
Subject: [PATCH] Update RecursiveFilterHelper.php

---
 src/Transformer/Helpers/RecursiveFilterHelper.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Transformer/Helpers/RecursiveFilterHelper.php b/src/Transformer/Helpers/RecursiveFilterHelper.php
index 0661c8f..5c49c2f 100644
--- a/src/Transformer/Helpers/RecursiveFilterHelper.php
+++ b/src/Transformer/Helpers/RecursiveFilterHelper.php
@@ -85,7 +85,9 @@ private static function filterKeys(
         array &$idProperties
     ) {
         foreach ($array as $key => &$value) {
-            if (self::isPreservableKey($key, $keepKeys, $idProperties)) {
+            if (self::isPreservableKey($key, $keepKeys, $idProperties) 
+                || false === in_array($key, $mappings[$typeKey]->getProperties())
+            ) {
                 $newArray[$key] = $value;
                 if (\is_array($newArray[$key])) {
                     self::deletePropertiesNotInFilter($mappings, $newArray[$key], $typeKey);