Your child must be supervised in the state in which they reside, which is considered the receiving state for the purposes of the interstate case. The probation officer in the state where probation was ordered (called the sending state) will issue your child a travel permit and will submit a transfer of supervision request through the state compact office.
If no legal guardian lives in the sending state, and a legal guardian does live in the receiving state, the case is considered a mandatory acceptance case. However, the probation officer in the state in which you reside is still require to do a home evaluation visit.