Section 5A-403
(a) Upon registration of a guardianship or protective order from another state, the guardian or conservator may exercise in the commonwealth all powers authorized in the order of appointment except those powers prohibited under the laws of the commonwealth, including maintaining actions and proceedings in the commonwealth and, if the guardian or conservator is not a resident of the commonwealth, subject to any conditions imposed upon nonresident parties.
(b) A court of the commonwealth may grant any relief available under this Article and other laws of the commonwealth to enforce a registered order.