diff --git a/ClosedXML/ClosedXML/ClosedXML/Excel/PageSetup/XLHeaderFooter.cs b/ClosedXML/ClosedXML/ClosedXML/Excel/PageSetup/XLHeaderFooter.cs
index ec3e639..088fed4 100644
--- a/ClosedXML/ClosedXML/ClosedXML/Excel/PageSetup/XLHeaderFooter.cs
+++ b/ClosedXML/ClosedXML/ClosedXML/Excel/PageSetup/XLHeaderFooter.cs
@@ -57,12 +57,14 @@
 
         private Dictionary<XLHFOccurrence, String> _initialTexts;
 
+        private Boolean _changed;
         internal Boolean Changed
         {
             get
             {
-                return _initialTexts.Any(it => GetText(it.Key) != it.Value);
+                return _changed || _initialTexts.Any(it => GetText(it.Key) != it.Value);
             }
+            set { _changed = value; }
         }
 
         internal void SetAsInitial()
diff --git a/ClosedXML/ClosedXML/ClosedXML/Excel/PageSetup/XLPageSetup.cs b/ClosedXML/ClosedXML/ClosedXML/Excel/PageSetup/XLPageSetup.cs
index 548a2f6..14d2724 100644
--- a/ClosedXML/ClosedXML/ClosedXML/Excel/PageSetup/XLPageSetup.cs
+++ b/ClosedXML/ClosedXML/ClosedXML/Excel/PageSetup/XLPageSetup.cs
@@ -23,6 +23,7 @@
                 _pagesTall = defaultPageOptions.PagesTall;
                 _pagesWide = defaultPageOptions.PagesWide;
                 _scale = defaultPageOptions.Scale;
+                
 
                 if (defaultPageOptions.Margins != null)
                 {
diff --git a/ClosedXML/ClosedXML/ClosedXML/Excel/XLWorksheet.cs b/ClosedXML/ClosedXML/ClosedXML/Excel/XLWorksheet.cs
index 9e6f0f4..c862b2c 100644
--- a/ClosedXML/ClosedXML/ClosedXML/Excel/XLWorksheet.cs
+++ b/ClosedXML/ClosedXML/ClosedXML/Excel/XLWorksheet.cs
@@ -567,6 +567,8 @@
             targetSheet.RowHeightChanged = RowHeightChanged;
             targetSheet.SetStyle(Style);
             targetSheet.PageSetup = new XLPageSetup((XLPageSetup)PageSetup, targetSheet);
+            (targetSheet.PageSetup.Header as XLHeaderFooter).Changed = true;
+            (targetSheet.PageSetup.Footer as XLHeaderFooter).Changed = true;
             targetSheet.Outline = new XLOutline(Outline);
             targetSheet.SheetView = new XLSheetView(SheetView);
             Internals.MergedRanges.ForEach(
diff --git a/ClosedXML/ClosedXML/ClosedXML_Tests/Resource/Examples/Misc/CopyingWorksheets.xlsx b/ClosedXML/ClosedXML/ClosedXML_Tests/Resource/Examples/Misc/CopyingWorksheets.xlsx
index f2664a2..05a846c 100644
--- a/ClosedXML/ClosedXML/ClosedXML_Tests/Resource/Examples/Misc/CopyingWorksheets.xlsx
+++ b/ClosedXML/ClosedXML/ClosedXML_Tests/Resource/Examples/Misc/CopyingWorksheets.xlsx
Binary files differ
diff --git a/ClosedXML/ClosedXML/ClosedXML_Tests/Resource/Examples/Misc/DataValidation.xlsx b/ClosedXML/ClosedXML/ClosedXML_Tests/Resource/Examples/Misc/DataValidation.xlsx
index 6fced73..cb6df2c 100644
--- a/ClosedXML/ClosedXML/ClosedXML_Tests/Resource/Examples/Misc/DataValidation.xlsx
+++ b/ClosedXML/ClosedXML/ClosedXML_Tests/Resource/Examples/Misc/DataValidation.xlsx
Binary files differ