There are no improvements on the boots. What could be the reason? (The Witcher 3: Wild Hunt)

Of the mods affecting wedbmachi armor, there is only mod carrying drawings of the wolf from KaerMorhan to Velen.
But when he began to look for improved armor Kota found that despite the completed quest to search there is no improvement on the boots, began to understand and found that in the task itself there are no boots, and there are TWO gloves. What could be the reason?