db.users.update(
    {'items.gear.owned.armor_special_birthday':{$ne:null}},
    {$set:{'items.gear.owned.armor_special_birthday2015':false}},
    {multi:1}
)

db.users.update(
    {'items.gear.owned.armor_special_birthday':null},
    {$set:{'items.gear.owned.armor_special_birthday':false}},
    {multi:1}
)

db.users.update({},{$inc:{
    'items.food.Cake_Skeleton':1,
    'items.food.Cake_Base':1,
    'items.food.Cake_CottonCandyBlue':1,
    'items.food.Cake_CottonCandyPink':1,
    'items.food.Cake_Shade':1,
    'items.food.Cake_White':1,
    'items.food.Cake_Golden':1,
    'items.food.Cake_Zombie':1,
    'items.food.Cake_Desert':1,
    'items.food.Cake_Red':1
}},{multi:1})

db.users.update(
    {'achievements.habitBirthday':true},
    {$set:{'achievements.habitBirthdays':1}},
    {multi:1}
)

db.users.update(
    {},
    {$inc:{'achievements.habitBirthdays':1}},
    {multi:1}
)