N.C. Gen. Stat. § 1-75.5: Joinder of causes in the same action.

In any action brought in reliance upon jurisdictional grounds stated in subdivisions (2) to (10) of G.S. 1-75.4 there cannot be joined in the same action any other claim or cause against the defendant unless grounds exist under G.S. 1-75.4 for personal jurisdiction over the defendant as to the claim or cause to be joined. (1967, c. 954, s. 2.)