Plane of Sky upgrades

[garfo]

Can't seem to find a definitive answer for this, and the wiki isn't 100% clear:

For the upgrades to Plane of Sky quest items (I'm referring to the Shaman Test of Shrink, but this should apply to any) -- to get the upgrade, do you simply hand in the first iteration of the item to the same quest NPC after completing the initial quest?

Thanks!