Release 5 Directory Proxy Server introduces interface changes that make it incompatible with earlier Directory Proxy Server releases. Release 5 Directory Proxy Server is based on a completely new Java-based implementation and its configuration differs fundamentally from Release 4 Directory Proxy Server, as well as earlier releases.
However, you can to configure Release 5 Directory Proxy Server to be backwardly compatible, that is, to behave like Release 4 Directory Proxy Server and earlier releases. This configuration requires you to manually map previous configuration attributes to Release 5 configuration properties. For more information, see the Sun Java System Directory Server Enterprise Edition 6.0 Migration Guide.