I've been playing with the archive function and it turns out that archive only saves cpu(unless there's a setting I'm unaware of). If you want to also unload the ram from samplers like kontakt, you need to disconnect the instrument in the synth rack. So this is kind of the best of both world for me since you get a choice. Something you don't have in Cubase i believe. But be aware that you need to either undock the synth rack or dock it in the multi-dock to see the disconnect function cause it will not appear in the side pan. Note that, while disconnected, kontakt still uses a minimum of ram since kontakt itself is still there but it's a pretty small amount. Also, for the same reason i would think, i was unable to unload the ram for vst(fx). Not really an issue at all for me.