diff --git a/src/nut/core/abstracttableset.cpp b/src/nut/core/abstracttableset.cpp
index e1b7eb9..5a1e574 100644
--- a/src/nut/core/abstracttableset.cpp
+++ b/src/nut/core/abstracttableset.cpp
@@ -57,16 +57,17 @@ int AbstractTableSet::save(Database *db)
         masterModel = db->model().tableByClassName(
             QString::fromUtf8(data->table->metaObject()->className()));
 
-    for (auto i = data->weakChildren.begin(); i != data->weakChildren.end(); ) {
-        auto &row = *i;
+    QMutableListIterator<QWeakPointer<Table>> weaks(data->weakChildren);
+    while (weaks.hasNext()) {
+        auto &row = weaks.next();
 
         if (!row) {
-            i = data->weakChildren.erase(i);
+            weaks.remove();
             continue;
         }
         auto t = row.lock();
         if (t.isNull()) {
-            i = data->weakChildren.erase(i);
+            weaks.remove();
             continue;
         }
 
@@ -80,31 +81,34 @@ int AbstractTableSet::save(Database *db)
             || t->status() == Table::Deleted) {
             rowsAffected += t->save(db);
         }
-        i++;
     }
 
-    for (auto i = data->children.begin(); i != data->children.end(); ) {
-        auto &t = *i;
-        if (!t) {
-            i = data->children.erase(i);
+    QMutableListIterator<QSharedPointer<Table>> childs(data->children);
+
+    while (childs.hasNext()) {
+        auto &row = childs.next();
+        if (!row) {
+            childs.remove();
             continue;
         }
 
         if (data->table)
-            t->setParentTable(data->table,
+            row->setParentTable(data->table,
                               masterModel,
                               db->model().tableByClassName(
-                                  QString::fromUtf8(t->metaObject()->className())));
+                                  QString::fromUtf8(row->metaObject()->className())));
 
-        if (t->status() == Table::Added || t->status() == Table::Modified
-            || t->status() == Table::Deleted) {
-            rowsAffected += t->save(db);
-            data->weakChildren.append(t.toWeakRef());
+        if (row->status() == Table::Added || row->status() == Table::Modified
+            || row->status() == Table::Deleted) {
+            rowsAffected += row->save(db);
+            data->weakChildren.append(row.toWeakRef());
+
+            childs.remove();
+            continue;
         }
-        i++;
     }
 
-    data->children.clear();
+//    data->children.clear();
 
     return rowsAffected;
 }
diff --git a/tests/auto/common/consts.h b/tests/auto/common/consts.h
index 7f311fe..96c5a2a 100644
--- a/tests/auto/common/consts.h
+++ b/tests/auto/common/consts.h
@@ -49,17 +49,17 @@
 #   define CC "Unknown"
 #endif
 
-#define PRINT_FORM(db) \
-    qDebug() << "\n\n****************************"                             \
-             << "\nAll tests passed,"                                          \
-             << "please fill in bellow form and email it to me at"             \
-             << "hamed.masafi@gmail.com"                                       \
-             << "\n\tDriver:" << db.driver()                                   \
-             << "\n\tOS: " OS " (version: ________)"                           \
-             << "\n\tCompiler: " CC " (version: ________)"                     \
-             << "\n\tQt version: " QT_VERSION_STR                              \
-             << "\n\tTest:" << metaObject()->className()                       \
-             << "\n****************************\n";
+#define PRINT_FORM(db)
+//    qDebug() << "\n\n****************************"                             \
+//             << "\nAll tests passed,"                                          \
+//             << "please fill in bellow form and email it to me at"             \
+//             << "hamed.masafi@gmail.com"                                       \
+//             << "\n\tDriver:" << db.driver()                                   \
+//             << "\n\tOS: " OS " (version: ________)"                           \
+//             << "\n\tCompiler: " CC " (version: ________)"                     \
+//             << "\n\tQt version: " QT_VERSION_STR                              \
+//             << "\n\tTest:" << metaObject()->className()                       \
+//             << "\n****************************\n";
 
 
 #endif // CONSTS_H
diff --git a/tests/auto/tst_basic/tst_basic.cpp b/tests/auto/tst_basic/tst_basic.cpp
index f11bbd0..97a8daa 100644
--- a/tests/auto/tst_basic/tst_basic.cpp
+++ b/tests/auto/tst_basic/tst_basic.cpp
@@ -257,7 +257,7 @@ void BasicTest::testDate()
 
     db.posts()->append(newPost);
 
-    db.saveChanges(true);
+    db.saveChanges();
 
     auto q = db.posts()->query()
             .where(Post::idField() == newPost->id())
diff --git a/tests/auto/tst_json/tst_json.cpp b/tests/auto/tst_json/tst_json.cpp
index 0f9f6ef..76a27e2 100644
--- a/tests/auto/tst_json/tst_json.cpp
+++ b/tests/auto/tst_json/tst_json.cpp
@@ -45,7 +45,7 @@ void TestJson::store()
     qDebug() << e.errorString();
     t->setDoc(doc);
     db.sampleTable()->append(t);
-    db.saveChanges(true);
+    db.saveChanges();
 
     int id = t->id();
     auto newObj = db.sampleTable()->query()