The hidden drawers or lift compartment are what make a storage bed heavier and more awkward than a plain frame, and also the first thing you need to fully empty before lifting anything.
Pro tip: Take the drawers out and load them as their own boxes rather than leaving them in the frame, this alone makes the frame dramatically lighter and less awkward.
Watch out: A loaded drawer adds real hidden weight and can slide open and spill during the lift, always confirm every drawer is fully empty before moving the frame.