DM Tool idea:

[dominantdrowess]

I know (partially) how the treasure system works-- with there being a ton of magic items in a giant chest...

What about an object next to the Staff-Room loot-chest that lists the items in alphabetical order-- and allows them to be selected, and deleted via menu?

Edit: Or possibly just dropped in the Admin/Staff/Dev's inventory for sorting, so they can find errored ones (like unstackable gem dust, etc)

[MalKalz]

The way the system works for the loot, the method would not be effective.

What is best done is listing what doesn't stack and where you found this. The admins will then have to go and clean up those specific chests (on each server) and remove those bad items.

But, DMs do not handle this sort of thing.