items PERSIST work.

src/engine/objects/Kit.java

@@ -120,7 +120,7 @@ public class Kit extends AbstractGameObject {
                 new ArrayList<>(), "");
 
         try {
-            temp = DbManager.ItemQueries.ADD_ITEM(temp);
+            temp = DbManager.ItemQueries.PERSIST(temp);
         } catch (Exception e) {
             Logger.error(e);
         }