(750 ILCS 36/203)
Jurisdiction To Modify Determination.
as otherwise provided in Section 204, a court of this State may not modify a
determination made by a court of another state unless a court of this
has jurisdiction to make an initial determination under Section 201(a)(1) or
(1) the court of the other state determines it no
longer has exclusive, continuing jurisdiction under Section 202 or that a court of this State would be a more convenient forum under Section 207; or
(2) a court of this State or a court of the other
state determines that the child, the child's parents, and any person acting as a parent do not presently reside in the other state.
(Source: P.A. 93-108, eff. 1-1-04.)