Various editors perceive the value of the 1594 Taming of a Shrew (Quarto) in different ways. The Sly scenes are in pretty mangled format in the FF (the chief source of the play), but Taming of a Shrew is pretty complete in this regard. Some feel Shakespeare wanted it that way or it was still a work in progress (there are signs of last-minute typesetting changes in the FF). Some assert that since the Taming of the Shrew in the FF was likely set from foul papers, the somewhat complete "Sly framework" in Taming of a Shrew should be reconstructed and added. (I think Pope did this).
I'm not sure how the Oxford edition differs. Like other editions, it removes the Sly scenes after the first two Induction scenes and puts them at the end of the play for reference instead of interspersing them. If you have any further information on this, I can check my edition to verify.