Will they put a warrant out if he moves out while on probation and if so does it ever go away?

If he does not like what the probation officer orders, he can ask for a hearing with the judge where he can make his requests for change. He absolutely should not just disobey the probation officer without judge approval. I know someone arrested on a warrant over 30 years old, and I do not know of any cases where the warrant just "goes away." The judge can approve his move to another state, but that would probably involve having a new probation officer in the new state; the probation would not go away until it is completed. If the judge says no, then he has to continue obeying the probation officer, or accept punishment for probation violation.