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My former spouse moved back in with his parents 3 yrs ago, June of this I was granted a change of domicile to another county 3 hours away.  Right now our custody case is in a county that niether of us live in.  I would like to move the case to my county or his county.  What guidelines do I need to have in place to have the change of venue granted and what are the proper steps?  Also my former spouse and I have a very messy custody battle and there is always some sort of activity happening in our case.