diff --git a/EPPlus/CellStore.cs b/EPPlus/CellStore.cs
index 608fa34b..17ad07bd 100644
--- a/EPPlus/CellStore.cs
+++ b/EPPlus/CellStore.cs
@@ -1106,7 +1106,7 @@ private int DeletePage(int fromRow, int rows, ColumnIndex column, int pagePos, b
                 var delSize=page.MaxIndex - page.MinIndex+1;
                 rows -= delSize;
                 var prevOffset = page.Offset;
-                Array.Copy(column._pages, pagePos + 1, column._pages, pagePos, column.PageCount - pagePos + 1);
+                Array.Copy(column._pages, pagePos + 1, column._pages, pagePos, column.PageCount - pagePos);
                 column.PageCount--;
                 if (column.PageCount == 0)
                 {
diff --git a/EPPlus/ExcelRangeBase.cs b/EPPlus/ExcelRangeBase.cs
index 2bd7ff46..0519de60 100644
--- a/EPPlus/ExcelRangeBase.cs
+++ b/EPPlus/ExcelRangeBase.cs
@@ -2987,7 +2987,6 @@ public void Sort(int[] columns, bool[] descending = null, CultureInfo culture =
             var formulas = GetItems(_worksheet._formulas, _fromRow, _fromCol, _toRow, _toCol);
             var hyperLinks = GetItems(_worksheet._hyperLinks, _fromRow, _fromCol, _toRow, _toCol);
             var comments = GetItems(_worksheet._commentsStore, _fromRow, _fromCol, _toRow, _toCol);
-            var sf = new HashSet<int>();
             //Sort the values and styles.
             _worksheet._values.Clear(_fromRow, _fromCol, _toRow - _fromRow + 1, cols);
             for (var r = 0; r < l.Count; r++)
@@ -3009,19 +3008,19 @@ public void Sort(int[] columns, bool[] descending = null, CultureInfo culture =
                         _worksheet._formulas.SetValue(row, col, formulas[addr]);
                         if (formulas[addr] is int)
                         {
-                            var sfIx = (int)formulas[addr];
-                            if (!sf.Contains(sfIx))
+                            int sfIx = (int)formulas[addr];
+                            var startAddr = new ExcelAddress(Worksheet._sharedFormulas[sfIx].Address);
+                            var f = Worksheet._sharedFormulas[sfIx];
+                            if (startAddr._fromRow > row)
                             {
-                                var startAddr = new ExcelAddress(Worksheet._sharedFormulas[sfIx].Address);
-                                if (startAddr._fromRow > row)
-                                {
-                                    var f = Worksheet._sharedFormulas[sfIx];
-                                    f.Formula = ExcelCellBase.TranslateFromR1C1(ExcelCellBase.TranslateToR1C1(f.Formula, f.StartRow, f.StartCol), row, f.StartCol);
-                                    f.StartRow = row;
-                                    f.Address = ExcelCellBase.GetAddress(row, col, startAddr._toRow, startAddr._toCol);
-                                }
+                                f.Formula = ExcelCellBase.TranslateFromR1C1(ExcelCellBase.TranslateToR1C1(f.Formula, f.StartRow, f.StartCol), row, f.StartCol);
+                                f.StartRow = row;
+                                f.Address = ExcelCellBase.GetAddress(row, startAddr._fromCol, startAddr._toRow, startAddr._toCol);
+                            }
+                            else if (startAddr._toRow < row)
+                            {
+                                f.Address = ExcelCellBase.GetAddress(startAddr._fromRow, startAddr._fromCol, row, startAddr._toCol);
                             }
-                            sf.Add(sfIx);
                         }
                     }
 
diff --git a/EPPlusTest/Issues.cs b/EPPlusTest/Issues.cs
index 3cdcbd8f..ea8ef78c 100644
--- a/EPPlusTest/Issues.cs
+++ b/EPPlusTest/Issues.cs
@@ -2347,7 +2347,7 @@ public void Issue376()
         [TestMethod]
         public void Issue367()
         {
-            using(var pck = new ExcelPackage(new FileInfo(@"c:\Temp\ProductFunctionTest.xlsx")))
+            using(var pck = OpenTemplatePackage(@"ProductFunctionTest.xlsx"))
             {
                 var sheet = pck.Workbook.Worksheets.First();
                 //sheet.Cells["B13"].Value = null;
@@ -2359,5 +2359,17 @@ public void Issue367()
                 Assert.AreEqual(0d, sheet.Cells["B16"].Value);
             }
         }
+        [TestMethod]
+        public void Issue345()
+        {
+            using (ExcelPackage package = OpenTemplatePackage("issue345.xlsx"))
+            {
+	            var worksheet = package.Workbook.Worksheets["test"];
+                int[] sortColumns = new int[1];
+                sortColumns[0] = 0;	
+	            worksheet.Cells["A2:A30864"].Sort(sortColumns);
+                package.Save();
+            }
+        }
     }
 }