If not check it: it now (not from yesterday but since a 2 weeks ago bugfix) deals 90 dmg.
But there is a bug always been present in the game since the beginning: changes are retroactive, but not if you changed the base stat of the weapon/armor with a kit.
In that case, and only for that specific stat you altered with a kit, the value remains unchanged.
For example when they changed the Staff of Epimetreus (nerfing dmg and ap of this op spear) the one I had in my armory without kits on it was retoactively changed, the one I had in my inventory with dmg kit on it changed only its value of ap.
To some people, grandfathered super-items are a motivator to keep on going, well past the play-by date of a game.
After all, logging on every 5 days, despite holidays, for a whole year has to mean something.
It’s what turns artifacts into relics.
I myself missed out on the 125+ dmg Crom Blades, but I am not jealous of those who have it already, because I still have pre-nerf Obsidian Greatswords, and pre-nerf replitian gauntlets.
New Players will always have it harder, because they never got to enjoy the perma-spawn Risas, Sayids and Enis the Globblers. They never got to tame Vathis’ over and over again, and getting female versions of him… the infinite stamina javelin, or the permanent-till-death functional warpaint, the dismantling of arrows for resources.
The only advantage that new players have is this: “One misses not a luxury unknown.”
Values that got changed with kits stay after a nerf/buff. They are directly written into the individual object’s memory.
They could run SQL jobs but it would not be worth the effort for small changes. (Get object by Id, read binary data and deserialize it into object model, change value, serialize and update the db entry again)