Board Thread:The B&B/@comment-24509764-20140814165729/@comment-5782071-20181102042729

Yeah, I consider it a "show takes precedence" thing and consider most of the information on that file a non-canon prop error. The music box was destroyed by the time Artie discovered it, so it was impossible to get those pictures; Myka started working at the WH in 2009, yes, but the music box was aquired in 1999 or so, not 2009; by the time Artie found the music box, he had seen the effects and certainly knew it caused psycho/telekinetic outbursts triggered by anger.

If it were an inventory check paper, that would make sense since Myka might have seen the destroyed music box stored on a shelf somewhere (the WH has the remains of Braid's Chair and the Donner Jar, so they'd definitely keep these remains) while doing her rounds. That might be the likeliest/simplest explanation, and we can ignore the stuff that directly contradicts the show and accept everything else.