IBM Rational Developer provides you with a tool to migrate an EJB project from version 1.1 to 2.0. See the IBM Rational Developer documentation Migrating J2EE applications for details.
When migrating an EJB 1.1 project to EJB 2.0, you will also need to convert the WebLogic deployment descriptors to EJB 2.0. This can be done either before or after the project migration as follows:
Note: The EJB project must be targeted to a WebLogic server runtime.