| As with any plot bag, anything inside of it that is not plot will be dumped out. (Another example is the AKN journeyman bag, which is plot, but will empty out any non-plot contents).
So...
non-plot bag & non-plot items = both stay on your corpse
non-plot bag & plot items = both stay on your corpse (plot items are in the bag, and do not travel)
plot bag & non-plot items = the bag goes with you, non-plot items are dumped on your corpse
plot bag & plot items = both go with you, and the plot items stay where they were in the bag.
-Grunt | 
