This is my first post on the forum, my apologies in advanced if I do not paste the code correctly.

I am not an expert at code, nor did I write the code you see below, but I need help. Here is the workbook in a nutshell:

The user will hit a button to create a copy of the worksheet to type their profile information into. The worksheet name will automatically change based on what the user types in cell B5. Then the VBA carries certain information from the worksheet over to a summary page and hyperlinks it back to the worksheet. What we are running into is that if a user changes the information is cell B5, a duplicate entry will be created on the summary page rather than the VBA code updating the entry that is already there. I would like to change this so that the code searches the summary page for the existing entry and then updates the field that is already there instead of adding a whole new row.

Any help would be MUCH appreciated. 

Private Sub Worksheet_Change(ByVal Target As Range)
    'Check if something changed in the J column
    If Target.Column = ActiveSheet.Range("J1").Column Then UpdateCalendar

    'Specify the target cell whose entry shall be the sheet tab name.
    If Target.Address <> "$B$5" Then Exit Sub
        'If the target cell is empty (contents cleared) then do not change the shet name
    If IsEmpty(Target) Then Exit Sub

    'If the length of the target cell's entry is greater than 31 characters, disallow the entry.
    If Len(Target.Value) > 31 Then
        MsgBox "Worksheet tab names cannot be greater than 31 characters in length." & vbCrLf & _
        "You entered " & Target.Value & ", which has " & Len(Target.Value) & " characters.", , "Keep it under 31 characters"
        Application.EnableEvents = False
        Application.EnableEvents = True
        Exit Sub
    End If

    'Sheet tab names cannot contain the characters /, \, [, ], *, ?, or :.
    'Verify that none of these characters are present in the cell's entry.
    Dim IllegalCharacter(1 To 10) As String, i As Integer
    IllegalCharacter(1) = "/"
    IllegalCharacter(2) = "\"
    IllegalCharacter(3) = "["
    IllegalCharacter(4) = "]"
    IllegalCharacter(5) = "*"
    IllegalCharacter(6) = "?"
    IllegalCharacter(7) = ":"
    IllegalCharacter(8) = ";"
    IllegalCharacter(9) = "'"
    IllegalCharacter(10) = """"
    For i = 1 To 10
        If InStr(Target.Value, (IllegalCharacter(i))) > 0 Then
            MsgBox "You used a character that violates sheet naming rules." & vbCrLf & vbCrLf & _
            "Please re-enter a sheet name without the ''" & IllegalCharacter(i) & "'' character.", 48, "Not a possible sheet name !!"
            Application.EnableEvents = False
            Application.EnableEvents = True
            Exit Sub
        End If
    Next i

    'Verify that the proposed sheet name does not already exist in the workbook.
    Dim strSheetName As String, wks As Worksheet, bln As Boolean
    strSheetName = Trim(Target.Value)
    On Error Resume Next
    Set wks = ActiveWorkbook.Worksheets(strSheetName)
    On Error Resume Next
    If Not wks Is Nothing Then
        bln = True
    Else
        bln = False
        Err.Clear
    End If

    'If the worksheet name does not already exist, name the active sheet as the target cell value.
    'Otherwise, advise the user that duplicate sheet names are not allowed.
    If bln = False Then
        ActiveSheet.Name = strSheetName
    Else
        MsgBox "There is already a sheet named " & strSheetName & "." & vbCrLf & _
        "Please enter a unique name for this sheet."
        Application.EnableEvents = False
        Application.EnableEvents = True
    End If
    
    '--------------------------------------------------------------------------------------------------------------------------------------------
    
    'Set a variable to hold the business list worksheet (that way it doesn't need to be selected to work with it)
    Dim BusinessList As Worksheet: Set BusinessList = Worksheets("Business List")
    
    'Get the last row with a value in column B, goes way down to 60,000 and says
    'Go up until you find a value in a cell. Add 1 to move to the blank line
    Dim LastRecord As Integer: LastRecord = BusinessList.Range("B60000").End(xlUp).Row + 1
    
    'Select the sheet so the user can see it work its magic
    'BusinessList.Activate
    
    'If the sheet name has a space it should be encapsulated with single quotes like so
    '='The Example Name'!B5
    'If there is no space it doesn't need the single quotes
    '=TheExampleName!B5
    Dim strSheet As String: strSheet = strSheetName
    If InStr(strSheetName, " ") > 0 Then strSheet = "'" & strSheetName & "'"
    
    'Fill in the formulas
    BusinessList.Range("B" & LastRecord).Formula = "=" & strSheet & "!B5"
    BusinessList.Range("C" & LastRecord).Formula = "=" & strSheet & "!I4"
    BusinessList.Range("D" & LastRecord).Formula = "=" & strSheet & "!J4"
    BusinessList.Range("E" & LastRecord).Formula = "=" & strSheet & "!K4"
    BusinessList.Range("F" & LastRecord).Formula = "=" & strSheet & "!B3"
    BusinessList.Range("G" & LastRecord).Formula = "=" & strSheet & "!C3"
    
    'Add the hyperlink
    BusinessList.Hyperlinks.Add _
    Anchor:=BusinessList.Range("B" & LastRecord), _
    Address:="", _
    SubAddress:=strSheet & "!A1"
    
    'Scroll to the new row
'    BusinessList.Rows(LastRecord & ":" & LastRecord).Activate
End Sub