https://forums.backpack.tf/topic/6033-rules-for-unusual-price-suggestions/

Due to some confusion caused by unusual weapon and warpaint suggestions and the pages they can be found on, we've decided to require unusual weapons to be suggested on the "Decorated Weapon" Quality page. This has been the case for the majority of the weapons already, but some displayed as "Unusual" as quality, and were therefore suggested on that page; it will now be obligatory to suggest those on the Decorated Weapon stat page as well.

This standardization is meant as a QoL update to allow for easier access to unusual weapon and warpaint prices, as well as avoid confusion to all potential suggestors that wish to price their weapon. The unification does not influence already accepted suggestions, so there is no need for 'transfer' suggestions, but for any future updates it will be a requirement.