We don't allow updates to the legacy device channels unless that update is to upload an out-of-service package. When you upload a channel you will be restricted to using min. firmware 5.x which means the update won't go to legacy devices. So you can leave the legacy channel running and create a new channel scenegraph channel without affecting the legacy channel.
Thank you for the reply. Does the 5.x era support Scene Graph? On a separate note, we still see *a lot* of 3.1 traffic.