Need help with Fira Pattern Markings

I purchased Fira paper pattern and am confused on markings on piece 4 (lower front top). I am tracing marking for size 4 and 6, but at some point on the side seam (end opposite fold line) the #s are getting transposed, e.g., the size 4 line says size 8 a couple inches away at a notch mark. I've attached a photo illustrating the markings.