Sub is affecting the wrong Excel workbook - excel

Question

I wrote this VBA code to generate a report from data in an Access table and dump it into Excel with user friendly formatting.
The code works great the first time. But if I run the code again while the first generated Excel sheet is open, one of my subroutines affects the first workbook instead of the newly generated one.
Why? How can I fix this?
I think the issue is where I pass my worksheet and recordset to the subroutine called GetHeaders that prints the columns, but I'm not sure.
Sub testROWReport()
DoCmd.Hourglass True
'local declarations
Dim strSQL As String
Dim rs1 As Recordset
'excel assests
Dim xlapp As excel.Application
Dim wb1 As Workbook
Dim ws1 As Worksheet
Dim tempWS As Worksheet
'report workbook dimentions
Dim intColumnCounter As Integer
Dim lngRowCounter As Long
'initialize SQL container
strSQL = ""
'BEGIN: construct SQL statement {
--this is a bunch of code that makes the SQL Statement
'END: SQL construction}
'Debug.Print (strSQL) '***DEBUG***
Set rs1 = CurrentDb.OpenRecordset(strSQL)
'BEGIN: excel export {
Set xlapp = CreateObject("Excel.Application")
xlapp.Visible = False
xlapp.ScreenUpdating = False
xlapp.DisplayAlerts = False
'xlapp.Visible = True '***DEBUG***
'xlapp.ScreenUpdating = True '***DEBUG***
'xlapp.DisplayAlerts = True '***DEBUG***
Set wb1 = xlapp.Workbooks.Add
wb1.Activate
Set ws1 = wb1.Sheets(1)
xlapp.Calculation = xlCalculationManual
'xlapp.Calculation = xlCalculationAutomatic '***DEBUG***
'BEGIN: Construct Report
ws1.Cells.Borders.Color = vbWhite
Call GetHeaders(ws1, rs1) 'Pastes and formats headers
ws1.Range("A2").CopyFromRecordset rs1 'Inserts query data
Call FreezePaneFormatting(xlapp, ws1, 1) 'autofit formatting, freezing 1 row,0 columns
ws1.Name = "ROW Extract"
'Special Formating
'Add borders
'Header background to LaSenza Pink
'Fix Comment column width
'Wrap Comment text
'grey out blank columns
'END: Report Construction
'release assets
xlapp.ScreenUpdating = True
xlapp.DisplayAlerts = True
xlapp.Calculation = xlCalculationAutomatic
xlapp.Visible = True
Set wb1 = Nothing
Set ws1 = Nothing
Set xlapp = Nothing
DoCmd.Hourglass False
'END: excel export}
End Sub
Sub GetHeaders(ws As Worksheet, rs As Recordset, Optional startCell As Range)
ws.Activate 'this is to ensure selection can occur w/o error
If startCell Is Nothing Then
Set startCell = ws.Range("A1")
End If
'Paste column headers into columns starting at the startCell
For i = 0 To rs.Fields.Count - 1
startCell.Offset(0, i).Select
Selection.Value = rs.Fields(i).Name
Next
'Format Bold Text
ws.Range(startCell, startCell.Offset(0, rs.Fields.Count)).Font.Bold = True
End Sub
Sub FreezePaneFormatting(xlapp As excel.Application, ws As Worksheet, Optional lngRowFreeze As Long = 0, Optional lngColumnFreeze As Long = 0)
Cells.WrapText = False
Columns.AutoFit
ws.Activate
With xlapp.ActiveWindow
.SplitColumn = lngColumnFreeze
.SplitRow = lngRowFreeze
End With
xlapp.ActiveWindow.FreezePanes = True
End Sub

Answer 1

When Cells and Columns are used alone, they refer to ActiveSheet.Cells and ActiveSheet.Columns.
Try to prefix them with the targeted sheet:
Sub FreezePaneFormatting(xlapp As Excel.Application, ws As Worksheet, Optional lngRowFreeze As Long = 0, Optional lngColumnFreeze As Long = 0)
ws.Cells.WrapText = False
ws.Columns.AutoFit
...
End Sub

Answer 2

Okay, I figured out the issue here. I guess I can't use the ".Select" or "Selection." when I'm working with an invisible, non updating workbook. I found that when I changed some code from automated selecting to simply directly changing the value of cells, it worked out.
OLD:
startCell.Offset(0, i).Select
Selection.Value = rs.Fields(i).Name
NEW:
ws.Cells(startCell.Row, startCell.Column).Offset(0, i).Value = rs.Fields(i).Name