This section is from the book "The Law Of Contracts", by William Herbert Page. Also available from Amazon: Commercial Contracts: A Practical Guide to Deals, Contracts, Agreements and Promises.
An assignment of a judgment does not carry with it the cause of action on which it is rendered. Hence, if it is vacated by appeal,1 or if the claim is settled before judgment is rendered,2 the assignee takes nothing. So an assignment by a judgment debtor to the judgment creditor of all claim against the debtor's agent on account of damages sustained by them "by reason of said above judgment," does not pass a cause of action against the agent, the judgment being for injuries to the creditor's horse by the negligence of the debtor's agent.3 So the assignment of a judgment has been held not to carry a right of action on an appeal bond unless specially assigned,4 nor a right of action against the clerk of the court for failure to index the judgment so as to make it a lien on the land of the debtor.5