diff -uPr old/sc/source/ui/undo/undodat.cxx new/sc/source/ui/undo/undodat.cxx
--- old/sc/source/ui/undo/undodat.cxx	2008-01-30 21:32:56.000000000 +0800
+++ new/sc/source/ui/undo/undodat.cxx	2008-08-01 10:44:40.000000000 +0800
@@ -1039,6 +1039,10 @@
 	if (!bCopy)
 		pDoc->UpdatePageBreaks( nTab );
 
+    ScRange aDirtyRange( 0 , aQueryParam.nRow1, nTab,
+        MAXCOL, aQueryParam.nRow2, nTab );
+    pDoc->SetDirty( aDirtyRange );
+
     DoSdrUndoAction( pDrawUndo, pDoc );
 
 	SCTAB nVisTab = pViewShell->GetViewData()->GetTabNo();