All you need do is delete:
Code:
Set RngFt = DocSrc.Sections.First.Footers(wdHeaderFooterPrimary).Range
and:
Code:
With .Sections.First.Footers(wdHeaderFooterPrimary).Range
.FormattedText = RngFt.FormattedText
.Characters.Last.Text = vbNullString
End With