dungeon gear and conversion?

Hey everyone,

Just curious about something. I have a bunch of gear from wanderers palace and can't seem to convert any of it to materia (100% condition, 100% spirit bond). Are you just not able to convert that gear to materia or am I missing something? lol

At the bottom of every armor/weapon description window let's you know. It'll either say (Convertible/non-convertible & Meldable/non-meldable)