The client should not be accessing a previously saved file for use as the basis of a new document. That's what templates are for.
Clear the variable text from the document and save it as a template, then create a macro similar to the following and call it from a button added to the QAT (Quick Access Toolbar)
http://www.gmayor.com/installing_macro.htm
Code:
Option Explicit
Sub MyNewDoc()
Documents.Add Template:="C:\Path\TemplateName.dotx" 'Change the path and name as appropriate
lbl_Exit:
Exit Sub
End Sub