I've been playing the original recently and had just started Book 3 when this version of the game arrived (via GOG, if that's useful to know). Following the game's advice, I restarted Book 3 to avoid any potential issues, but I'm now completely stuck in the Interlude. I've found every drawing except the one that's usually on top of the cabinet next to the guitar in the dining room.
I've searched everywhere, and I've checked online for any reference, but apparently this is still where the drawing is supposed to reside. Is this a bug in the Final Cut version? Was the drawing moved elsewhere?