How to copy-paste in macro excel (VBA) - vba

Question

I need to copy a lot of rows. I tried to do something.copy something else.paste but it's extremely slow
I tried to do
Range(..).value(formula) = Range(..).value(formula) but its not so good because i have a date there that turn to ######
I need a faster way to do this copy/paste
This is my code:
Function Last_Col(k As Long) As Long
Last_Col = Cells(k, Columns.Count).End(xlToLeft).Column
End Function
Function Last_Col_Doc() As Long
Last_Col_Doc = Cells.SpecialCells(xlCellTypeLastCell).Offset(1, 0).Column
End Function
Function Is_Grouped(i As Long) As Boolean
Is_Grouped = (Cells(i, 2).Rows.OutlineLevel > 1)
End Function
Function Is_Bold(i As Long) As Boolean
Is_Bold = Cells(i, 2).Font.Bold
End Function
Function Print_NA(i As Long, k As Long) As Boolean
Range(Cells(i, 21), Cells(i, 21 + k - 2)).Value = "NA"
End Function
Function Last_Row() As Long
Last_Row = Cells(Rows.Count, "B").End(xlUp).Row
End Function
Sub EditParanoia()
Dim FrstBlkRow As Long
Dim flag As Boolean
Dim i As Long
Dim HeadLen As Long
FrstBlkRow = Last_Col(1) + 1
If FrstBlkRow < 25 Then 'first edit
flag = True
i = 2
Do While flag
If Is_Bold(i) Then
flag = False
Else
i = i + 1
End If
Loop
HeadLen = Last_Col(i)
Range(Cells(i, 2), Cells(i, HeadLen)).Copy
Range(Cells(1, FrstBlkRow), Cells(1, FrstBlkRow + HeadLen - 2)).PasteSpecial
Else
FrstBlkRow = 21
HeadLen = 10
End If
Dim j As Long
For i = 2 To Last_Row Step 1
If Not Is_Grouped(i) And Not Is_Grouped(i + 1) And Cells(i, FrstBlkRow + 1).Value = vbNullString Then
'if not part of group
Range(Cells(i, FrstBlkRow), Cells(i, FrstBlkRow + HeadLen - 2)).Value = "NA"
ElseIf Not Is_Grouped(i) And Is_Grouped(i + 1) And Is_Grouped(i + 2) And Not Is_Grouped(i + 3) Then
'if Part of group of 1 val
Range(Cells(i + 2, 2), Cells(i + 2, 2 + HeadLen - 2)).Copy
Range(Cells(i, FrstBlkRow), Cells(i, FrstBlkRow + HeadLen - 3)).PasteSpecial
ElseIf Not Is_Grouped(i) And Is_Grouped(i + 1) Then
'if part of group of more then one val
j = 1
Do Until Is_Grouped(i + j) And Not Is_Grouped(i + j + 1)
'j will get the langth of any group
j = j + 1
Loop
'past the relevant cell in the right place
Range(Cells(i + 2, 2), Cells(i + 2 + j - 1 - 1, 2 + HeadLen - 2)).Copy
Range(Cells(i, FrstBlkRow), Cells(i + j - 1 - 1, FrstBlkRow + HeadLen - 3)).PasteSpecial
'past the head respectively
Range(Cells(i, 1), Cells(i, 20)).Copy
Range(Cells(i + 1, 1), Cells(i + j - 2, FrstBlkRow - 1)).PasteSpecial
End If
Next
End Sub

Answer 1

When you say you've tried "Range(..).value(formula) = Range(..).value(formula)", what do you mean? You should be able to set two ranges equal to eachother:
Say A1:A10 has "Batman, 10-01-2015" and you want to copy that range to B1:B10, Range("B1:B10").Value = Range("A1:A10").Value. You can't do that? I tried it with dates, and it set the B range values to dates, no reformatting necessary.
I also notice in your code, you PasteSpecial, but don't specify what type of special paste. See the Microsoft (or this one) page for more info.