For UBER KeyStore (Bouncy Castle UBER KeyStore) as well as in PKCS12 KeyStore, the alias name is case sensitive. For other types of KeyStore, the alias name is not case sensitive.

So, when converting from UBER or PKCS12 to other type of KeyStores, or when moving an entry from a UBER or PKCS12 type KeyStore to an other, the alias name will be changed to lower case.