Whoever said that he Rhodes forgave him? Didnt you hear what they said about Orton defending his title in a match against Cody Rhodes? They said it was strictly business. The same would apply in this case. Orton, who happens to be WWE Champion and a big star in the WWE, is associated with Cody so it helps him in the long run. Of course Dusty, who happens to be the father of Cody, wasnt going to screw that up because like he said There's nothing that a father wouldn't do for his son," which would mean that Dusty isnt going to screw something that could end up benefiting his son in the long run.
So in this case, it seems like its strictly business and nothing more or less so I wouldnt say that creative was expecting for fans to forget about the past. But yes, for whatever reason, there are times when creative will just think that fans dont remember something that happened sometime in the past. But I just dont think thats the case here.