There are a couple of points about that.
The original tribunals that were combined into the SST had this model where there were two levels of appeal where appellants were allowed to introduce new evidence. Historically, there was a desire by stakeholders to return to that.
Also, at the general division, the entire process is being made more efficient and more client-centric. Clients will be able to put a good case forward at the general division but it was felt that, again, as their medical case evolves, they should have an ability to bring in new evidence to the appeal division.