Insert row to separates group of data with header - excel

Question

Would anyone will be able to help me with this script please?
As it stand, this current macro separate the data once the value/text have changes and insert new row but I just cannot work it out how to include the headers once the row have been inserted.
Sub Insert Row()
Dim ws As Worksheet
Dim lr As Long
Dim i As Long
Set ws = Worksheets("Sheet1") 'the sheet with the data
lr = ws.Range("A" & Rows.Count).End(xlUp).Row 'last row with data in Column A
For i = lr - 1 To 2 Step -1
If ws.Range("A" & i).Value <> ws.Range("A" & i + 1).Value Then ws.Range("A" & i + 1).EntireRow.Insert
Next i
End Sub
Thank you in advanced.

Answer 1

Duplicate Headers
A Quick Fix
Sub InsertHeaders()
Const FIRST_ROW As Long = 1
Const EMPTY_ROWS As Long = 1
Dim ws As Worksheet: Set ws = ThisWorkbook.Worksheets("Sheet1")
Dim LastRow As Long: LastRow = ws.Cells(ws.Rows.Count, "A").End(xlUp).Row
Dim r As Long
For r = LastRow To FIRST_ROW + 2 Step -1
With ws.Cells(r, "A")
If .Value <> .Offset(-1).Value Then
.EntireRow.Resize(EMPTY_ROWS + 1).Insert
ws.Rows(1).Copy ws.Rows(.Row - 1)
End If
End With
Next r
End Sub

Answer 2

Please ignore my comment, as I just realize that it will be a different result if in column A there is a cell with the same value.
Example Data :
Expected result after running the sub :
Sub test()
Dim rgHdr As Range: Dim rgData As Range: Dim cell As Range
Dim i As Integer: Dim arr: Dim ins As Integer:dim sh as worksheet
Set sh = Sheets("Sheet1") 'change if needed
ins = 3 'change if needed
With sh
.Range("A1").EntireRow.Resize(ins).Insert Shift:=xlDown
Set rgHdr = .Range("A1").EntireRow.Resize(1 + ins)
Set rgData = .Range("K" & 2 + ins, .Range("K" & Rows.Count).End(xlUp))
End With
Set arr = CreateObject("scripting.dictionary")
For Each cell In rgData: arr.Item(cell.Value) = 1: Next
For i = 1 To arr.Count - 1
rgHdr.Copy
sh.Cells(rgData.Find(arr.Keys()(i), _
after:=rgData.End(xlDown)).Row, 1).Insert Shift:=xlDown
Next
sh.Range("A1").EntireRow.Resize(ins).Delete
End Sub
sh = the sheets where the data is.
ins = skip how many blank rows.
The code use "insert copied cells" method, so it make three blank rows (the value of ins) before the header, then set the first three rows as rgHdr, set the rgData from K2 down to the last row with value.
arr = unique value in column K.
then it loop to each element in arr, get the first row occurence of the found cell which value is the looped element in arr, insert the copied rgHdr to that row.
Then finally it delete those three (ins value is 3) additional blank rows.