Change of sole custody to joint custody if both parents live in different states than
I am trying to find out where I would need to go to change/modify a custody order that granted my ex spouse sole legal and physical custody 3 years ago. He now resides in MA, I now reside in CA, but in may will be moving to TX to live with my fiancˇ. The original custody order (was changed from shared legal and physical) to sole for him after the divorce and after I left the state. Now due to him having just recently come back from a 2 1/2 yr stay out of the country with the child the UCCJEA law is kind of confusing. So I am trying to find out where jurisdiction lies to modify the custody since father moved to MA about 4 month ago.