Canceling a waiting hold from the Holds Over tab currently updates the item's last seen date. However, the fact that the staff member is canceling the hold doesn't necessarily mean they have the item in their hand. If the item is missing from the holds shelf, the staff member may cancel the hold from the holds over tab and mark the item missing, in which case the item's last seen date certainly should not be updated. On the other hand, if the item is there, the staff member is meant to check it in after canceling the hold. That check-in will update the item's last seen date anyway, so again, it is not necessary for it to be updated when the hold is canceled.