(A) Participation by a plaintiff in a responding tribunal in a proceeding under this subarticle, whether in person, by private attorney, or through services provided by the support enforcement agency, does not permit the exercise of personal jurisdiction over the plaintiff in another proceeding.
(B) A plaintiff is not amenable to service of civil process while physically present in this State to participate in proceedings under this subarticle.
(C) The immunity granted by this section does not extend to civil litigation based on acts unrelated to the proceedings under this subarticle committed by a party while present in this State.