So, I just got my clear game roster party . I equip some of them, and I changed rosters, and when I went to their accessories, all the accessories they had were not only unequipped, but they were gone.

How did I know they were not just unequipped? Because one of the members had a heaven ring (quest only item), and I no longer have it in my inventory.

Oh, this also include any equipment thats on a guest character and when you save the game and power off, the items will be gone when loading the saved game too

Just a warning for those that use special guest members on clear saved games.