Courts generally prohibit “claim-splitting.” Claim splitting occurs when a single cause of action is “split and filed or tried piecemeal.” G.B. v. Crossroads Acad.-Cent. St., 618 S.W.3d 581, 591 (Mo. Ct. App. 2020). When more than one lawsuit is filed, and the first results in a judgment, claims that could have been raised by the prevailing…