Missing On Hit Damage - Blue Smite

I've been playing a lot of Quinn jungle lately and noticed that, at least with Quinn, upgrading from Machete to Blue Smite results in a jungle item without 20 damage/hit to monsters. Every other 2nd tier jungle item includes the 20 damage/hit to monsters, and the Blue Smite upgrade text includes that damage portion, but ultimately the item in your inventory (and your attacks) will be missing that damage.

Upgrading to Tier 3 with Blue Smite brings the damage back.

Thanks!