Archive data from "sheet1" to next blank row of "sheet2" - excel

Question

I have code to archive data from "sheet1" to "sheet2". It overwrites existing data in the "sheet2" rows from the previous archive exercise.
How do I have it seek the next blank row vs. overwriting existing data?
I have two header rows so it should commence with row 3.
Option Explicit
Sub Archive()
Dim lr As Long, I As Long, rowsArchived As Long
Dim unionRange As Range
Sheets("sheet1").Unprotect Password:="xxxxxx"
Application.ScreenUpdating = False
With Sheets("sheet1")
lr = .Range("A" & .Rows.Count).End(xlUp).Row
For I = 3 To lr 'sheets all have headers that are 2 rows
If .Range("AB" & I) = "No" Then
If (unionRange Is Nothing) Then
Set unionRange = .Range(I & ":" & I)
Else
Set unionRange = Union(unionRange, .Range(I & ":" & I))
End If
End If
Next I
End With
rowsArchived = 0
If (Not (unionRange Is Nothing)) Then
For I = 1 To unionRange.Areas.Count
rowsArchived = rowsArchived + unionRange.Areas(I).Rows.Count
Next I
unionRange.Copy Destination:=Sheets("sheet2").Range("A3")
unionRange.EntireRow.Delete
End If
Sheets("sheet2").Protect Password:="xxxxxx"
Application.CutCopyMode = False
Application.ScreenUpdating = True
MsgBox "Operation Completed. Total Rows Archived: " & rowsArchived
End Sub

Answer 1

Change
unionRange.Copy Destination:=Sheets("sheet2").Range("A3")
... to,
with worksheets("sheet2")
unionRange.Copy _
Destination:=.Cells(.rows.count, 1).end(xlup).offset(1, 0)
end with
This is like starting at the bottom row of the worksheet (e.g. A1048576) and tapping [ctrl+[↑] then selecting the cell directly below it.
The With ... End With statement isn't absolutely necessary but it shortens the code line enough to see it all without scolling across. unionRange has been definied by parent worksheet and cell range so there is no ambiguity here.

Answer 2

I'd propose the following "refactoring"
Option Explicit
Sub Archive()
Dim sht1 As Worksheet, sht2 As Worksheet
Set sht1 = Sheets("sheet1")
Set sht2 = Sheets("sheet2")
sht1.Unprotect Password:="xxxxxx"
With sht1.Columns("AB").SpecialCells(xlCellTypeConstants).Offset(, 1) '<== change the offset as per your need to point to whatever free column you may have
.FormulaR1C1 = "=if(RC[-1]=""NO"","""",1)"
.Value = .Value
With .SpecialCells(xlCellTypeBlanks)
.EntireRow.Copy Destination:=sht2.Cells(sht2.Rows.Count, 1).End(xlUp).Offset(1, 0)
MsgBox "Operation Completed. Total Rows Archived: " & .Cells.Count
End With
.ClearContents
End With
sht2.Protect Password:="xxxxxx"
End Sub
just choose a "free" column in "Sheet1" to be used as a helper one and that'll be cleared before exiting macro. In the above code I assumed it's one column to the right of "AB"

Answer 3

The following approach worked for me! I'm using a button to trigger macro.
Every time it takes the last row and append it to new sheet like a history. Actually you can make a loop for every value inside your sheet.
Sub copyProcess()
Application.ScreenUpdating = False
Dim copySheet As Worksheet
Dim pasteSheet As Worksheet
Dim source_last_row As Long 'last master sheet row
source_last_row = 0
source_last_row = Range("A:A").SpecialCells(xlCellTypeLastCell).Row
Set copySheet = Worksheets("master")
Set pasteSheet = Worksheets("alpha")
copySheet.Range("A" & source_last_row, "C" & source_last_row).copy
pasteSheet.Cells(Rows.Count, 1).End(xlUp).Offset(1, 0).PasteSpecial
xlPasteValues
Application.CutCopyMode = False
Application.ScreenUpdating = True
End Sub