Reloading the application and fetching the pending_op_groups from it ins...

Reloading the application and fetching the pending_op_groups from it instead of reloading the embedded object. 

Reloading the op_group reloads the application and then incorrectly reloads (potentially) the op_group based on its position within the :pending_op_groups list. Hence, reloading the application, and then fetching the op_group using the _id of the op_group.