1# **937053 < 937052**23* Removed the previous migration of AppPromition45# **937052 < 937051**67* Migrate AppPromotion from using reserves to locks89# **936050 < 930032**1011### **pallet-collator-selection:**1213* Added use of Collator Selection pallet, along with Session, Authorship, and Identity:14 * Aura authorities become Collator Selection's invulnerables15 * Session keys are put, and the first session is started1617# **930032 < 924010**1819### **pallet-common:**2021* Removed the previous migration of:22 * if the storage version is below 1, all collections from storage **CollectionById** of struct **Collection** version 1 to version 2, consisting of:23 * displacing _offchain_schema, variable_on_chain_schema, const_on_chain_schema, schema_version_ into _properties_24 * displacing _acccess, mint_mode_ into _permissions.access, permissions.mint_mode_25 * adding _external_collection_ flag26* Added unconditional bump of the storage version to 127* Replaced returned weight `0` with `Weight::zero()`2829### **pallet-nonfungible:**3031* Removed the previous migration of:32 * if the storage version is below 1, all items from storage **TokenData** of struct **ItemData** version 1 to version 2, consisting of:33 * displacing _const_data, variable_data_ into _properties_34 * adding permission for the collection admin to set the immutable __old_constData_ property35* Added unconditional bump of the storage version to 136* Replaced returned weight `0` with `Weight::zero()`3738### **pallet-refungible:**3940* Removed the previous migration of:41 * if the storage version is below 1, all items from storage **TokenData** of struct **ItemData** version 1 to version 2, consisting of:42 * removing _variable_data_43* Added:44 * if the storage version is below 2, cleaning of all storage of now-redundant **TokenData**45 * unconditional bump of the storage version to 246* Replaced returned weight `0` with `Weight::zero()`4748### **pallet-unique:**4950* Removed the previous migration of:51 * unconditional cleaning of all storage of **VariableMetaDataBasket** (cache for sponosoring setting deprecated variable metadata)