Not at all. In fact a great many of the changes made to the original trilogy since the prequels were made to bring it back in line with them.
So they re filmed it to include that the mandalorians wiped out the Jedi?
You should explain those changes better in a different thread, because I have no clue what you mean by that.
Perhaps the most infamous example is when Lucas replaced Sebastian Shaw with Hayden Christenen for Anakin Skywalker's ghost at the end of Return of the Jedi.
that always made sense to me as anaking did become vader at a young age