A tribunal of the District may enforce a child-support order of another state registered for purposes of modification, in the same manner as if the order had been issued by a tribunal of the District, but the registered support order may be modified only if the requirements of § 46-356.11 or § 46-356.13 have been met.
Effect of registration for modification
D.C. Code § 46-356.10 — under Registration for Enforcement of Support Order..
D.C. Code § 46-356.10