Saving an array to new workbook - arrays

Question

Scenario: I have a workbook with multiple worksheets. I am trying to use a function (called within a sub) to export arrays with data from certain worksheets. The arrays are created before the function with the content from the worksheet with:
If ws.Name = "AA" Then
expaa = ws.UsedRange.Value
End if
where expaa is previously defined as variant.
The function I am using apparently finishes running, but the output on the new file saved is weird: instead of having one row of headers, the first row is split into 2 for some reason (all the others remain the same).
This is the function I am using:
Function Exporter(arr As Variant, y As String, OutPath As String) As Variant
Dim lrow As Long, lColumn As Long
Dim w2 As Workbook
Dim d As Date
Workbooks.Add
Set w2 = ActiveWorkbook
w2.Worksheets(1).Range("A1").Resize(UBound(arr, 1), UBound(arr, 2)) = arr
Application.DisplayAlerts = False
w2.SaveAs Filename:=OutPath & "\" & y, FileFormat:=6
Application.DisplayAlerts = True
w2.Close True
End Function
Which I call from the main sub with:
If aa_name <> "" Then
Exporter expaa , "aa_OK", wbpath
End If
where aa_name is the name of the file used to retrieve the path.
Obs: The wbpath variable is a string with the path of my main workbook (therefore the new file is saved at the same location).
Question: What may be causing the first row of my output to be split? How can that be fixed?
Obs2: I know this can be done with copy procedure, and looping through the array and so on. I even got it to work with other methods. This post is only to understand what I am doing wrong with the current code.
Obs3: Regarding the data that is going to be passed: it is a matrix of days, identifiers and data, ex:
Item1 Item2 Item3
01/01/2000 1 1 2
02/01/2000 1 2 1
03/01/2000 2 2 2
with around 2000 rows and 3000 columns.
UPDATE: After retesting the code multiple times, It appears that the data of the first row only gets split when the file is save as csv (when the array is pasted, the output is normal). Any idea on what may be the cause for that?

Answer 1

I know this is old but here is my solution for the googlers. This accepts an array and creates a CSV at a path you define. Its probably not perfect but it has worked so far for me.
Option Explicit
Option Private Module
Public Function SaveTextToFile(ByVal targetarray As Variant, ByVal filepath As String) As Boolean
On Error GoTo CouldNotMakeFile
Dim fso As FileSystemObject
Set fso = New FileSystemObject
Dim fileStream As TextStream
' Here the actual file is created and opened for write access
Set fileStream = fso.CreateTextFile(filepath)
' Write something to the file
Dim Row As Long, Col As Long
For Row = LBound(targetarray, 1) To UBound(targetarray, 1)
For Col = LBound(targetarray, 2) To UBound(targetarray, 2)
fileStream.Write StringCompliance(targetarray(Row, Col)) & IIf(Col = UBound(targetarray, 2), "", ",")
Next Col
fileStream.WriteBlankLines 1
Next Row
' Close it, so it is not locked anymore
fileStream.Close
' Here is another great method of the FileSystemObject that checks if a file exists
If fso.FileExists(filepath) Then
SaveTextToFile = True
End If
CouldNotMakeFile:
End Function
Private Function StringCompliance(ByVal InputString As String) As String
Dim CurrentString As String
CurrentString = InputString
'Test if string has qoutes
If InStr(CurrentString, Chr$(34)) > 0 Then
CurrentString = Chr$(34) & Replace(CurrentString, Chr$(34), Chr$(34) & Chr$(34)) & Chr$(34)
StringCompliance = True
Else
'Tets if string has commas or line breaks
If InStr(CurrentString, ",") > 0 Or InStr(CurrentString, vbLf) > 0 Then
CurrentString = Chr$(34) & CurrentString & Chr$(34)
Else
StringCompliance = False
End If
End If
StringCompliance = CurrentString
End Function