Advanced (hidden?) match frame command

I've been a FCP user since version 2 and recently this question has come up that I haven't found an answer for. If you have a nest or a sequence within a sequence and you want to match frame to the master clip of a specific shot, is there a hidden keyboard combo or menu command that can get you all the way there? Currently, if you match frame a nest or sequence within a sequence you match to the nest or sequence in the viewer. From there it doesn't appear you can then match back to the master clip. Of course there are work arounds but it would be nice to just match back with a key command. Anyone know any tips or secrets?