Complex sentence: In 2009 the Opéra de Dijon orchestra was transferred to the Camerata de Bourgogne which then merged with Orchestre Dijon to form the regional orchestra Orchestre Dijon Bourgogne which is used for most of the company's opera productions.
Split into simpler sentences: In 2009 the Opéra de Dijon orchestra was transferred to the Camerata de Bourgogne which then merged with Orchestre Dijon to form the regional orchestra Orchestre Dijon Bourgogne. The Orchestre Dijon Bourgogne is used for most of the company's opera productions.