Summing Mode is one of the coolest things about MixConsole, except that when exporting multi-tracks there is no audio exported for the individual tracks… Ie the only tracks that will export are the channels doing the summing.
I would have loved to use Summing Mode as a sort of creative matrix patchbay/splitter where certain channels could be sent/split any number of ways in a project template… But losing the ability to export those root tracks is a no go.