As I mentioned in the ticket
This is going to require some rework of how submissions are handled once uploaded. Some sort of wizard will probably be needed to spread out the work being done.
Right now there are a few important issues with the CDB that require attention, this being one of them. Can't really tell you how long it will take to get this one resolved though as the issue is quite difficult to diagnose and resolve through code changes. Dont know why you're unable to attach it to this topic though. Probably a timeout.