The Antiquated and Animated weapons are rather different.

Antiquated weapons are obtained by trading in tomestones and are just that - antiquated relics. You can power them up to i210 with Illuminati Gobdip, obtained by winning one in A4S or by trading a Mhachi Farthing for it.

Animated weapons are "ensouled" weapons; that is, they have pseudo-souls installed in them like golems. They share models with the Antiquateds, but are created by using an Astral Nodule and Umbral Nodule. The exact creation process is unknown, but they merely look identical. Once you get to the Awoken state, they take on a glow effect, and past that have a unique weapon model (Anima Weapon).

Essentially, they're not the same weapon, even though they look identical.