Looping and pasting worksheets into new workbook, error part way through

My code is supposed to open four workbooks, each of which have a worksheet entitled "Template", loop through each, and for each workbook copy and paste all worksheets after "Template" into a new workbook. The macro is working great until it gets to the final workbook and it stops part of the way through and I get an error saying I can't name a worksheet the same name as an existing worksheet. When I try to move ahead with the macro, it seems that instead of pasting into the new workbook it is trying to paste into the original workbook. I can't figure out why. Here is the macro:

 

Private Template_file As String





Sub CopySheets()
    Dim wb As Variant
    Dim idx As Long
    Dim i As Long
    Dim YM As String
    
    
    Template_file = Worksheets(SheetA).Range("B5")
    

    Workbooks.Open (Worksheets(SheetA).Range("L47")), UpdateLinks:=0

    Windows(Template_file).Activate
    
        Sheets(SheetA).Select
        
    Workbooks.Open (Worksheets(SheetA).Range("L48")), UpdateLinks:=0

    Windows(Template_file).Activate
    
        Sheets(SheetA).Select
        
    Workbooks.Open (Worksheets(SheetA).Range("L49")), UpdateLinks:=0

    Windows(Template_file).Activate
    
        Sheets(SheetA).Select
        
    Workbooks.Open (Worksheets(SheetA).Range("L50")), UpdateLinks:=0

    Windows(Template_file).Activate
    
        Sheets(SheetA).Select
     
    ThisWorkbook.Activate
    
    For Each wb In Array(Worksheets(SheetA).Range("N47").Value, Worksheets(SheetA).Range("N48").Value, Worksheets(SheetA).Range("N49").Value, Worksheets(SheetA).Range("N50").Value) '<---- target workbooks
         
        With Workbooks(wb)
             
            idx = .Worksheets("Template").Index
            For i = idx + 1 To .Worksheets.Count
                 
                .Worksheets(i).Copy after:=ActiveWorkbook.Worksheets(ActiveWorkbook.Worksheets.Count)
            Next i
        End With
    Next wb
    
    Windows(Worksheets(SheetA).Range("N47").Value).Activate
    ActiveWorkbook.Close savechanges:=False
    
    Windows(Worksheets(SheetA).Range("N48").Value).Activate
    ActiveWorkbook.Close savechanges:=False
    
    Windows(Worksheets(SheetA).Range("N49").Value).Activate
    ActiveWorkbook.Close savechanges:=False
    
    Windows(Worksheets(SheetA).Range("N50").Value).Activate
    ActiveWorkbook.Close savechanges:=False
End Sub

And here is where the error occurs after it's looped through a few worksheets on the final workbook in the array:

 

.Worksheets(i).Copy after:=ActiveWorkbook.Worksheets(ActiveWorkbook.Worksheets.Count)

Why might Excel out of nowhere try to paste into the workbook from where it's being copied when it's done what I want it to do up until this seemingly random point? Thanks for the help!