Okla. Stat. tit. 30, § 30-3-319
Use of authorized powers
(a) Upon registration of a guardianship or protective order
from another state, the guardian or conservator may exercise in this
state all powers authorized in the order of appointment except as
prohibited under the laws of this state, including maintaining
actions and proceedings in this state and, if the guardian or
conservator is not a resident of this state, subject to any
conditions imposed upon nonresident parties.
(b) A court of this state may grant any relief available under
this act and other law of this state to enforce a registered order.