Catalysis of an oxidation-reduction (redox) reaction in which a CH-CH group acts as a hydrogen or electron donor and reduces a hydrogen or electron acceptor.
OBSOLETE. Catalysis of the reaction: m+q H2O + a 6-phosphogluco-3-phosphogluco-amylopectin = m+q hydrogenphosphate + a 6-phosphogluco-3-phosphogluco-amylopectin.