grand staff dynamic range

Assuming this is not already a feature, I'd like to be able to preset the Dynamic range value (Staff/Part/System) for an entire composition. Currently I'm importing some piano compositions into MuseScore via MusicXML from another composition program (Sibelius) and I am having to manually set each and every dynamic marking for left and right hand individually using the Dynamic range (setting it to Staff) in the Inspector. If there's an easier way to do this, I couldn't find it in the user manual.