Offers Sold in Graphs is Incorrect

For the ★ Skeleton Knife | Slaughter, StatTrak Factory New, an offer was sold for €369.99 on Skinport on 15 December 2025 https://skinport.com/es/item/stattrak-skeleton-knife-slaughter-factory-new?r=csgoskins. It is not reflected on the graph. This could be the case for other marketplaces.