Cannot apply item skin transfer on two items of same type

Both Brightbeak War Hammer and The Supreme Truth Crystal Sceptre are listed as a "One-handed mace" but when I try to apply the item skin transfer from the sceptre to the hammer it says "items must be of the same type"

If they aren't the same type, how on earth is someone meant to know if even the in-game item classification is misleading, a little consistency would be nice...

Sceptres and regular maces don't have the same animations, so you can't skin transfer between them. I agree that it's confusing, but it's not simple to solve since calling a sceptre a sceptre instead of a one-handed mace in-game would be confusing in most other cases (e.g. for nodes, skill compatibility, etc).

Then they should allow skin transfers between them in very much the same way you can buy MTX that are compatible with multiple weapon types e.g. Crypt Sword can apply to any one-handed sword, axe, mace or sceptre