diff --git a/src/app/tape/tmainwindow.cpp b/src/app/tape/tmainwindow.cpp
index d5ab1be8d..ddb8c8fc7 100644
--- a/src/app/tape/tmainwindow.cpp
+++ b/src/app/tape/tmainwindow.cpp
@@ -75,7 +75,7 @@ enum {ColumnName = 0, ColumnFullName, ColumnCalcValue, ColumnFormula, ColumnBase
 
 //---------------------------------------------------------------------------------------------------------------------
 TMainWindow::TMainWindow(QWidget *parent)
-    :QMainWindow(parent),
+    : VAbstractMainWindow(parent),
       ui(new Ui::TMainWindow),
       m(nullptr),
       data(nullptr),
@@ -270,11 +270,15 @@ bool TMainWindow::LoadFile(const QString &path)
             if (mType == MeasurementsType::Standard)
             {
                 VVSTConverter converter(path);
+                m_curFileFormatVersion = converter.GetCurrentFormatVarsion();
+                m_curFileFormatVersionStr = converter.GetVersionStr();
                 m->setXMLContent(converter.Convert());// Read again after conversion
             }
             else
             {
                 VVITConverter converter(path);
+                m_curFileFormatVersion = converter.GetCurrentFormatVarsion();
+                m_curFileFormatVersionStr = converter.GetVersionStr();
                 m->setXMLContent(converter.Convert());// Read again after conversion
             }
 
@@ -337,6 +341,13 @@ bool TMainWindow::LoadFile(const QString &path)
     return true;
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void TMainWindow::ShowToolTip(const QString &toolTip)
+{
+    Q_UNUSED(toolTip)
+    // do nothing
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 void TMainWindow::FileNew()
 {
@@ -645,6 +656,19 @@ bool TMainWindow::FileSave()
     }
     else
     {
+        if (mType == MeasurementsType::Standard
+                && m_curFileFormatVersion < VVSTConverter::MeasurementMaxVer
+                && not ContinueFormatRewrite(m_curFileFormatVersionStr, VVSTConverter::MeasurementMaxVerStr))
+        {
+            return false;
+        }
+        else if (mType == MeasurementsType::Individual
+                 && m_curFileFormatVersion < VVITConverter::MeasurementMaxVer
+                 && not ContinueFormatRewrite(m_curFileFormatVersionStr, VVITConverter::MeasurementMaxVerStr))
+        {
+            return false;
+        }
+
 #ifdef Q_OS_WIN32
         qt_ntfs_permission_lookup++; // turn checking on
 #endif /*Q_OS_WIN32*/
@@ -703,6 +727,19 @@ bool TMainWindow::FileSave()
             messageBox.exec();
             return false;
         }
+        else
+        {
+            if (mType == MeasurementsType::Standard)
+            {
+                m_curFileFormatVersion = VVSTConverter::MeasurementMaxVer;
+                m_curFileFormatVersionStr = VVSTConverter::MeasurementMaxVerStr;
+            }
+            else
+            {
+                m_curFileFormatVersion = VVITConverter::MeasurementMaxVer;
+                m_curFileFormatVersionStr = VVITConverter::MeasurementMaxVerStr;
+            }
+        }
     }
     return true;
 }
@@ -2794,12 +2831,14 @@ bool TMainWindow::LoadFromExistingFile(const QString &path)
 
             if (mType == MeasurementsType::Standard)
             {
-                VException e(tr("Export standard measurements not supported."));
+                VException e(tr("Export from standard measurements is not supported."));
                 throw e;
             }
             else
             {
                 VVITConverter converter(path);
+                m_curFileFormatVersion = converter.GetCurrentFormatVarsion();
+                m_curFileFormatVersionStr = converter.GetVersionStr();
                 m->setXMLContent(converter.Convert());// Read again after conversion
             }
 
diff --git a/src/app/tape/tmainwindow.h b/src/app/tape/tmainwindow.h
index 3b4d8efd2..c114dcba0 100644
--- a/src/app/tape/tmainwindow.h
+++ b/src/app/tape/tmainwindow.h
@@ -29,13 +29,13 @@
 #ifndef TMAINWINDOW_H
 #define TMAINWINDOW_H
 
-#include <QMainWindow>
 #include <QTableWidget>
 
 #include "../vmisc/def.h"
 #include "../vmisc/vlockguard.h"
 #include "../vformat/vmeasurements.h"
 #include "../vmisc/vtablesearch.h"
+#include "../vwidgets/vabstractmainwindow.h"
 
 namespace Ui
 {
@@ -44,7 +44,7 @@ namespace Ui
 
 class QLabel;
 
-class TMainWindow : public QMainWindow
+class TMainWindow : public VAbstractMainWindow
 {
     Q_OBJECT
 
@@ -62,6 +62,9 @@ public:
 
     bool LoadFile(const QString &path);
 
+public slots:
+    virtual void ShowToolTip(const QString &toolTip) Q_DECL_OVERRIDE;
+
 protected:
     virtual void closeEvent(QCloseEvent *event) Q_DECL_OVERRIDE;
     virtual void changeEvent(QEvent* event) Q_DECL_OVERRIDE;
diff --git a/src/app/valentina/dialogs/configdialog.cpp b/src/app/valentina/dialogs/configdialog.cpp
index d45eadcff..e7e8300db 100644
--- a/src/app/valentina/dialogs/configdialog.cpp
+++ b/src/app/valentina/dialogs/configdialog.cpp
@@ -140,6 +140,8 @@ void ConfigDialog::showEvent(QShowEvent *event)
         resize(sz);
     }
 
+    okButton->setFocus();
+
     isInitialized = true;//first show windows are held
 }
 
diff --git a/src/app/valentina/dialogs/configpages/configurationpage.cpp b/src/app/valentina/dialogs/configpages/configurationpage.cpp
index 940ce3353..0e19e9a41 100644
--- a/src/app/valentina/dialogs/configpages/configurationpage.cpp
+++ b/src/app/valentina/dialogs/configpages/configurationpage.cpp
@@ -59,7 +59,7 @@ ConfigurationPage::ConfigurationPage(QWidget *parent)
       unitChanged(false),
       labelLangChanged(false),
       sendReportCheck(nullptr),
-      askPointDeletionCheck(nullptr),
+      resetWarningsButton(nullptr),
       toolBarStyleCheck(nullptr),
       saveGroup(nullptr),
       intervalLabel(nullptr),
@@ -112,7 +112,6 @@ void ConfigurationPage::Apply()
 
     settings->SetOsSeparator(osOptionCheck->isChecked());
     settings->SetSendReportState(sendReportCheck->isChecked());
-    settings->SetConfirmItemDelete(askPointDeletionCheck->isChecked());
     settings->SetToolBarStyle(toolBarStyleCheck->isChecked());
 
     if (langChanged || systemChanged)
@@ -366,11 +365,16 @@ QGroupBox *ConfigurationPage::DrawGroup()
 {
     drawGroup = new QGroupBox(tr("Pattern Editing"));
 
-    askPointDeletionCheck = new QCheckBox(tr("Confirm item deletion"));
-    askPointDeletionCheck->setChecked(qApp->ValentinaSettings()->GetConfirmItemDelete());
+    resetWarningsButton = new QPushButton(tr("Reset warnings"));
+    QSizePolicy sizePolicy(QSizePolicy::Fixed, QSizePolicy::Preferred);
+    sizePolicy.setHorizontalStretch(0);
+    sizePolicy.setVerticalStretch(0);
+    sizePolicy.setHeightForWidth(resetWarningsButton->sizePolicy().hasHeightForWidth());
+    resetWarningsButton->setSizePolicy(sizePolicy);
+    connect(resetWarningsButton, &QPushButton::released, this, &ConfigurationPage::ResetWarnings);
 
     QVBoxLayout *editLayout = new QVBoxLayout;
-    editLayout->addWidget(askPointDeletionCheck);
+    editLayout->addWidget(resetWarningsButton);
 
     drawGroup->setLayout(editLayout);
     return drawGroup;
@@ -422,14 +426,23 @@ void ConfigurationPage::changeEvent(QEvent *event)
         RetranslateUi();
     }
     // remember to call base class implementation
-   QWidget::changeEvent(event);
+    QWidget::changeEvent(event);
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+void ConfigurationPage::ResetWarnings()
+{
+    VSettings *settings = qApp->ValentinaSettings();
+
+    settings->SetConfirmItemDelete(true);
+    settings->SetConfirmFormatRewriting(true);
 }
 
 //---------------------------------------------------------------------------------------------------------------------
 void ConfigurationPage::RetranslateUi()
 {
     toolBarStyleCheck->setText(tr("The text appears under the icon (recommended for beginners)."));
-    askPointDeletionCheck->setText(tr("Confirm item deletion"));
+    resetWarningsButton->setText(tr("Reset warnings"));
 
     saveGroup->setTitle(tr("Save"));
     autoSaveCheck->setText(tr("Auto-save modified pattern"));
@@ -477,7 +490,7 @@ void ConfigurationPage::RetranslateUi()
                             "Crash_reports\">kind of information</a> we collect."));
 
     drawGroup->setTitle(tr("Pattern Editing"));
-    askPointDeletionCheck->setText(tr("Confirm item deletion"));
+    resetWarningsButton->setText(tr("Confirm item deletion"));
     toolBarGroup->setTitle(tr("Toolbar"));
     toolBarStyleCheck->setText(tr("The text appears under the icon (recommended for beginners)."));
 }
diff --git a/src/app/valentina/dialogs/configpages/configurationpage.h b/src/app/valentina/dialogs/configpages/configurationpage.h
index fa3167a8e..eda3aefe2 100644
--- a/src/app/valentina/dialogs/configpages/configurationpage.h
+++ b/src/app/valentina/dialogs/configpages/configurationpage.h
@@ -31,6 +31,7 @@
 
 #include <QObject>
 #include <QPlainTextEdit>
+#include <QPushButton>
 #include <QWidget>
 
 class QCheckBox;
@@ -52,6 +53,8 @@ public slots:
     void      LabelLangChanged();
 protected:
     virtual void changeEvent(QEvent* event) Q_DECL_OVERRIDE;
+private slots:
+    void ResetWarnings();
 private:
     Q_DISABLE_COPY(ConfigurationPage)
     QCheckBox *autoSaveCheck;
@@ -65,7 +68,7 @@ private:
     bool      unitChanged;
     bool      labelLangChanged;
     QCheckBox *sendReportCheck;
-    QCheckBox *askPointDeletionCheck;
+    QPushButton *resetWarningsButton;
     QCheckBox *toolBarStyleCheck;
 
     QGroupBox *saveGroup;
diff --git a/src/app/valentina/mainwindow.cpp b/src/app/valentina/mainwindow.cpp
index a1d90d3f4..dbc7c8e52 100644
--- a/src/app/valentina/mainwindow.cpp
+++ b/src/app/valentina/mainwindow.cpp
@@ -2563,6 +2563,11 @@ bool MainWindow::Save()
     }
     else
     {
+        if (m_curFileFormatVersion < VPatternConverter::PatternMaxVer
+                && not ContinueFormatRewrite(m_curFileFormatVersionStr, VPatternConverter::PatternMaxVerStr))
+        {
+            return false;
+        }
 #ifdef Q_OS_WIN32
         qt_ntfs_permission_lookup++; // turn checking on
 #endif /*Q_OS_WIN32*/
@@ -2614,6 +2619,8 @@ bool MainWindow::Save()
         if (result)
         {
             QFile::remove(curFile + autosavePrefix);
+            m_curFileFormatVersion = VPatternConverter::PatternMaxVer;
+            m_curFileFormatVersionStr = VPatternConverter::PatternMaxVerStr;
         }
         else
         {
@@ -4090,6 +4097,8 @@ bool MainWindow::LoadPattern(const QString &fileName, const QString& customMeasu
     try
     {
         VPatternConverter converter(fileName);
+        m_curFileFormatVersion = converter.GetCurrentFormatVarsion();
+        m_curFileFormatVersionStr = converter.GetVersionStr();
         doc->setXMLContent(converter.Convert());
         if (!customMeasureFile.isEmpty())
         {
diff --git a/src/libs/ifc/xml/vabstractconverter.cpp b/src/libs/ifc/xml/vabstractconverter.cpp
index 69f416f8d..4cbe9b05b 100644
--- a/src/libs/ifc/xml/vabstractconverter.cpp
+++ b/src/libs/ifc/xml/vabstractconverter.cpp
@@ -86,6 +86,12 @@ QString VAbstractConverter::Convert()
     return m_convertedFileName;
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+int VAbstractConverter::GetCurrentFormatVarsion() const
+{
+    return m_ver;
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 QString VAbstractConverter::GetVersionStr() const
 {
diff --git a/src/libs/ifc/xml/vabstractconverter.h b/src/libs/ifc/xml/vabstractconverter.h
index 67503f775..193fb502c 100644
--- a/src/libs/ifc/xml/vabstractconverter.h
+++ b/src/libs/ifc/xml/vabstractconverter.h
@@ -55,6 +55,9 @@ public:
 
     QString Convert();
 
+    int GetCurrentFormatVarsion() const;
+    QString GetVersionStr() const;
+
     static int GetVersion(const QString &version);
 
 protected:
@@ -87,8 +90,6 @@ private:
 
     QTemporaryFile m_tmpFile;
 
-    QString GetVersionStr() const;
-
     static void ValidateVersion(const QString &version);
 
     void ReserveFile() const;
diff --git a/src/libs/vmisc/vcommonsettings.cpp b/src/libs/vmisc/vcommonsettings.cpp
index ee6b3f2ae..fb6c71e63 100644
--- a/src/libs/vmisc/vcommonsettings.cpp
+++ b/src/libs/vmisc/vcommonsettings.cpp
@@ -46,15 +46,16 @@ const QString settingPathsIndividualMeasurements = QStringLiteral("paths/individ
 const QString settingPathsStandardMeasurements   = QStringLiteral("paths/standard_measurements");
 const QString settingPathsTemplates              = QStringLiteral("paths/templates");
 
-const QString settingConfigurationOsSeparator         = QStringLiteral("configuration/osSeparator");
-const QString settingConfigurationAutosaveState       = QStringLiteral("configuration/autosave/state");
-const QString settingConfigurationAutosaveTime        = QStringLiteral("configuration/autosave/time");
-const QString settingConfigurationSendReportState     = QStringLiteral("configuration/send_report/state");
-const QString settingConfigurationLocale              = QStringLiteral("configuration/locale");
-const QString settingPMSystemCode                     = QStringLiteral("configuration/pmscode");
-const QString settingConfigurationUnit                = QStringLiteral("configuration/unit");
-const QString settingConfigurationConfirmItemDeletion = QStringLiteral("configuration/confirm_item_deletion");
-const QString settingConfigurationToolBarStyle        = QStringLiteral("configuration/tool_bar_style");
+const QString settingConfigurationOsSeparator            = QStringLiteral("configuration/osSeparator");
+const QString settingConfigurationAutosaveState          = QStringLiteral("configuration/autosave/state");
+const QString settingConfigurationAutosaveTime           = QStringLiteral("configuration/autosave/time");
+const QString settingConfigurationSendReportState        = QStringLiteral("configuration/send_report/state");
+const QString settingConfigurationLocale                 = QStringLiteral("configuration/locale");
+const QString settingPMSystemCode                        = QStringLiteral("configuration/pmscode");
+const QString settingConfigurationUnit                   = QStringLiteral("configuration/unit");
+const QString settingConfigurationConfirmItemDeletion    = QStringLiteral("configuration/confirm_item_deletion");
+const QString settingConfigurationConfirmFormatRewriting = QStringLiteral("configuration/confirm_format_rewriting");
+const QString settingConfigurationToolBarStyle           = QStringLiteral("configuration/tool_bar_style");
 
 const QString settingPatternUser           = QStringLiteral("pattern/user");
 const QString settingPatternUndo           = QStringLiteral("pattern/undo");
@@ -392,6 +393,18 @@ void VCommonSettings::SetConfirmItemDelete(const bool &value)
     setValue(settingConfigurationConfirmItemDeletion, value);
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+bool VCommonSettings::GetConfirmFormatRewriting() const
+{
+    return value(settingConfigurationConfirmFormatRewriting, 1).toBool();
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+void VCommonSettings::SetConfirmFormatRewriting(const bool &value)
+{
+    setValue(settingConfigurationConfirmFormatRewriting, value);
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 bool VCommonSettings::GetToolBarStyle() const
 {
diff --git a/src/libs/vmisc/vcommonsettings.h b/src/libs/vmisc/vcommonsettings.h
index fc131725b..dda98614b 100644
--- a/src/libs/vmisc/vcommonsettings.h
+++ b/src/libs/vmisc/vcommonsettings.h
@@ -90,6 +90,9 @@ public:
     bool GetConfirmItemDelete() const;
     void SetConfirmItemDelete(const bool &value);
 
+    bool GetConfirmFormatRewriting() const;
+    void SetConfirmFormatRewriting(const bool &value);
+
     bool GetToolBarStyle() const;
     void SetToolBarStyle(const bool &value);
 
diff --git a/src/libs/vwidgets/vabstractmainwindow.cpp b/src/libs/vwidgets/vabstractmainwindow.cpp
index 350c1e98d..59e11fa57 100644
--- a/src/libs/vwidgets/vabstractmainwindow.cpp
+++ b/src/libs/vwidgets/vabstractmainwindow.cpp
@@ -27,10 +27,44 @@
  *************************************************************************/
 
 #include "vabstractmainwindow.h"
+#include "../vpropertyexplorer/checkablemessagebox.h"
+#include "../vmisc/vabstractapplication.h"
 
-VAbstractMainWindow::VAbstractMainWindow(QWidget *parent) : QMainWindow(parent)
+#include <QStyle>
+
+VAbstractMainWindow::VAbstractMainWindow(QWidget *parent)
+    : QMainWindow(parent),
+      m_curFileFormatVersion(0x0),
+      m_curFileFormatVersionStr(QLatin1String("0.0.0"))
 {}
 
 //---------------------------------------------------------------------------------------------------------------------
-VAbstractMainWindow::~VAbstractMainWindow()
-{}
+bool VAbstractMainWindow::ContinueFormatRewrite(const QString &currentFormatVersion,
+                                                const QString &maxFormatVersion)
+{
+    if (qApp->Settings()->GetConfirmFormatRewriting())
+    {
+        Utils::CheckableMessageBox msgBox(this);
+        msgBox.setWindowTitle(tr("Confirm format rewriting"));
+        msgBox.setText(tr("This file is using previous format version v%1. The current is v%2. "
+                          "Saving the file with this app version will update the format version for this "
+                          "file. This may prevent you from be abale to open the file with older app versions. "
+                          "Do you really want to continue?").arg(currentFormatVersion).arg(maxFormatVersion));
+        msgBox.setStandardButtons(QDialogButtonBox::Yes | QDialogButtonBox::No);
+        msgBox.setDefaultButton(QDialogButtonBox::No);
+        msgBox.setIconPixmap(QApplication::style()->standardIcon(QStyle::SP_MessageBoxQuestion).pixmap(32, 32));
+
+        int dialogResult = msgBox.exec();
+
+        if (dialogResult == QDialog::Accepted)
+        {
+            qApp->Settings()->SetConfirmFormatRewriting(not msgBox.isChecked());
+            return true;
+        }
+        else
+        {
+            return false;
+        }
+    }
+    return true;
+}
diff --git a/src/libs/vwidgets/vabstractmainwindow.h b/src/libs/vwidgets/vabstractmainwindow.h
index d7002c76c..2522b2164 100644
--- a/src/libs/vwidgets/vabstractmainwindow.h
+++ b/src/libs/vwidgets/vabstractmainwindow.h
@@ -40,10 +40,19 @@ class VAbstractMainWindow : public QMainWindow
     Q_OBJECT
 public:
     explicit VAbstractMainWindow(QWidget *parent = nullptr);
-    virtual ~VAbstractMainWindow() Q_DECL_OVERRIDE;
+    virtual ~VAbstractMainWindow() Q_DECL_EQ_DEFAULT;
 
 public slots:
     virtual void ShowToolTip(const QString &toolTip)=0;
+
+protected:
+    int     m_curFileFormatVersion;
+    QString m_curFileFormatVersionStr;
+
+    bool ContinueFormatRewrite(const QString &currentFormatVersion, const QString &maxFormatVersion);
+
+private:
+    Q_DISABLE_COPY(VAbstractMainWindow)
 };
 
 #endif // VABSTRACTMAINWINDOW_H