使用NHibernate在多个数据库之间复制实体

I have a desktop (winforms) application that uses a Firebird database as a data store (in embedded mode) and I use NHibernate for ORM. One of the functions we need to support is to be able to import / export groups of data to/from an external file. Currently, this external file is also a database with the same schema as the main database.I have a desktop (winforms) application that us