SAP Business Objects enterprise upgrade from 4.0 SP08 to 4.2 SP05

Hi,

We are planning to upgrade from BO4 SP08 to BO4.2 SP05 and just wondered on people's experience of doing similar e.g. have read that promotion management service is 'restructured'

We have currently the adaptive processing server services and just want to check services will be migrated as is when move from 4.0 to 4.2 SP05 or at least if are any differences to be aware of these as much as possible.

Also some users use the java plugin for richer web intelligence interface.

Have read the dhtml one in 4.2 SP05 has 'caught' up - wondered if people still using java plugin in 4.2?