Best way to overhaul the weapons as a whole?

[Scarr]

Hello there,
My DM is quite the medieval "fanatic" and has redone the weapon and armour system since he believes it should be more realistic. I do have a list of all the changes, and it's quite extensive. I would nonetheless want to incorporate these changes as a set of changes in the editor. Naturally, my first step was just to add the new weapons as duplicates. Now while that works, I do have... duplicates now, obviously, which does clutter the screen quite a lot when I want to add a new weapon.

So, this is probably a dumb question, but is there a way to hide weapons that I have created duplicates of? A workaround would be to add something to every overhauled weapon, but I would prefer it to be hidden.