Not sure about OS version 2.0 but under version 3.0 you can start a sysex dump by pressing the midi key in the part edit section whilst in global mode. Before doing so, check the supernova sysex transmission type on one of the global pages is set how you want (total data, all programs etc). Now in VST disable sysex filtering on record, select a midi track, hit record and then start the sysex dump from the supernova. Hey presto, one midi track (save as a .mid)containing all your data.
Incidentally OS ver 3.1beta is available on the Novation website - even more goodies.
Hope this helps,
Yellowbelly