Deprecated Config Item still used: category cache timespan

I was running into a problem recently with a navigation item not showing up after a repeated draft->approved, update apps, etc. (Everything but restarting CF, which I can't do). It turned out that the "Deprecated" config item in the genera Admin config (Category Cache Timespan) was being used to cache the tree query for the getDescendants function.

Reference: approx line 296 in /core/packages/farcry/tree.cfc.

It still seems to be in use in the 6.0 trunk: http://fisheye.farcrycms.org/browse/core/trunk/packages/farcry/tree.cfc?r=trunk.