At the very least you should have a letter signed by your ex saying that he will knowingly waive the limitations on your movement. (It would be good if you included that he knows he could see an attorney, but chooses not to.) It would be best if it was in his handwriting and signed by him.
Failing that, I would suggest that you petition the court, (which you can find out about at your county law library)to remove the limitation. You should include the reasons why its necessary and if the ex is in accord mention that as well...
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