How to Remove "Copy" prefix while Importing .pst Outlook Calendars

From  Outlook client:

1. Press Alt+F11 which will open the VBA window. 
2. In the left pane, navigate to Project1-MS Outlook Object and double-click 'ThisOutlookSession'.
3. Paste the code into the window in the right pane.
4. Press the green arrow button to execute the code.

Script

Sub FixCopy()
Dim calendar As MAPIFolder
Dim calItem As Object
   
Set calendar = Application.GetNamespace("MAPI").GetDefaultFolder(olFolderCalendar)
       
Dim iItemsUpdated As Integer
Dim strTemp As String

iItemsUpdated = 0
For Each calItem In calendar.Items
    If Mid(calItem.Subject, 1, 6) = "Copy: " Then
      strTemp = Mid(calItem.Subject, 7, Len(calItem.Subject) - 6)
      calItem.Subject = strTemp
      iItemsUpdated = iItemsUpdated + 1
    End If
    calItem.Save
Next calItem

MsgBox iItemsUpdated & " of " & calendar.Items.count & " Items Updated"

End Sub