MGM/UA Entertainment said stockholders of record Sept....

MGM/UA Entertainment said stockholders of record Sept. 9 will be entitled to vote at the special shareholders meeting on a proposal to merge with Turner Broadcasting System. The meeting date has not been set . . . Negotiators for UPI and its employees union resumed talks in hopes of settling a dispute over UPI demands for additional wage and benefits concessions . . . Security Pacific Corp. said its shares have begun trading on the Tokyo Stock Exchange.