Disabling a module that provides default profile types deletes profiles and profile_types for the defined defaults

I'm not sure if this is a profile2 issue or an issue with the entity API, but I have a module that defines default profile types using hook_default_profile2_type(). If I disable the module, the types that my module defines get deleted from the profile_type table and all of the user profile records for those types get deleted from the profile table.