The other thing I would recommend you finding and figuring out is what does your state's law say about moving away.
In Alabama -- that was covered in "the code" for example. It's been a long time ago for me but even though a divorce didn't say anything about it -- the Law did.
In my case for a similar situation, our divorce said one thing. Over time, the law got more defined. But dad didn't follow the law as it was updated. So I complained (filed for contempt), and the judge said he was not in contempt. then at the end the judge said "Do you have any questions?" And I said "your honor, what am I supposed to do when our decree is 1996, and the law over time gets more specific because that's what happened?" Judge said "Well, I should have found him in contempt, BUT I don't think you will have any more problems on this subject, will she dad?" And dad said "No".....