We added the following section to the rule book underneath Item Tiers and Type on (PG. 28)
Using Item Upgrades
Though they are attached to an Item, Item Upgrades and their Abilities are used independently of the Item they are attached to. Meaning, if you upgraded an Item with an Upgrade that had a Flip Ability, when used, that Flip Ability would only Flip the Upgrade and not the Item it was attached too.