I've taught myself Smoke 2007, then 2009. I work back-up, part-time.
When working on projects, I'll pull an old version, edit new footage into spot, and
into action for layering. Twice I've accidentally done something where all the layers in
the action go to desktop (in a new folder if I recall). How do you do this on purpose.
Sometimes I need to extract text from action to desktop for revision.
Also in 2009 I can't find keyframes for crop in animation, so I end up resetting crop in action to change new crop for revision.
In animation, the crop keyframes are under media. So, if you want to change the crop keyframes for media layer 2, you open up animation, then open up media, and in there you will see setting for the bg and all you media layers. Open up media layer 2 and you will find the crop settings. (Also, softness, slip and i think shadow)
I'm dont know a key stroke that would save all you action layers to the desktop. But you could send your action clip to the timeline, open up it's history, then click on the layer you need, and hit match. (At least that is what I have been doing....)
i'm using 2008, but for your 'layers go to the desk' question, i think 2008 and 2009 is the same.
in preference, look for a button name something like 'Keep the imtermediate result' under 'module/soft effect' menu. If this is turn on, when you load a history for re-edit, and if the layer that used in the composite is not already on the desk, then it will load it to the desk.