We've been told Arndt is working off of treatements/outlines that Lucas wrote and we know he doesn't follow or really care abotu contridicting the EU. Kennedy said they don't have books to give them a template of were to go and everything was new original and original. There is also the logically position/thought that, if you are making a 150-200 million dollar movie you have to start at the beginning for the main characters so the audience can releate, follow and care about them and the story. Having the story follow 30 years of published material isn't how you do that. So then you have to ask, if the movie will/does change that much of the EU continuity are you better served making big, sweeping retcons that many new readers (the ones you are hoping to attract with a new movie) won't know about thus making their entry into the EU universe/material more difficult and confusing (and with 40-50 books worth of material, there already is a big barrier to entry). Or would they make more money by restarting it, and producing a product that is made to tie into the movie, is easy for all readers to pick up and enjoy, and can/will/could lead to more material down the road? Also keep in mind they have 2 more moneys coming, plus whatever tv shows and/or movies they want to make after Episode VII. Given the direction they will/want too/could go, its unlikely that current EU will stand, it just takes away too many oppertunities for Disney and Lucasfilm to tell stories.