I am experiencing an odd issue when using the following code to insert a document into another word document.

stringID = Environ("Username")
    Selection.MoveUp Unit:=wdLine, Count:=75
    Selection.InsertFile FileName:="c:\macros\" & stringID & "\letter.docx", ConfirmConversions:=False, _
       Link:=False, Attachment:=False
With Selection.Font
        .Name = "Arial"
        .Size = 11

End With
    Selection.InsertDateTime DateTimeFormat:="MMMM d, yyyy", InsertAsField:= _
When this code is ran on a document that has any text in it the footer present in letter.docx document does not appear. If there is no text in the open document, the file is inserted and the footer appears. I have unfortunately hit a road block trying to research this issue and what the best practice would be for this scenario. Would anyone be able to point me in the right direction? Please note I am using Word 2013 while testing this.