How did the overture to Die Zauberharfe become known as the Rosamunde overture?

The overture to the play Die Zauberharfe (The Magic Harp) became famous as the Rosamunde overture because of its association with the incidental music Franz Schubert composed for the play Rosamunde, which was performed in Vienna in December 1823. The lovely, melodious overture from the earlier 1820 production of Die Zauberharfe became widely known by the title of this later, more prominent theatrical work.1