force getempty on create

force_getempty.patch

diff --git a/inc/commondbtm.class.php b/inc/commondbtm.class.php
index 492dcb7..b1bfdf9 100644
--- a/inc/commondbtm.class.php
+++ b/inc/commondbtm.class.php
@@ -2330,10 +2330,8 @@ class CommonDBTM extends CommonGLPI {
 
       // Create process
       if ($this->isNewID($ID)) {
-         if (!isset($this->fields['id'])) {
-            // Only once
-            $this->getEmpty();
-         }
+         // Only once
+         $this->getEmpty();
 
          if (is_array($input)) {
             $input = $this->addNeededInfoToInput($input);