3.X Data Flow

Some times when a new datasource is installed and replicated to BW , it comes as a 3.x datasoure.
Eg: 0VEN_COMPC_ATTR .
The datasource can be activated only if the 3.X objects are included.
In this case, you can migrate the datasource.
Right click on the datasource and check "Migrate" . This will give a pop up saying that it would delete all 3/5 dataflow ( which should be fine ) and you can select how you want to migrate.
With Export Option : will allow you to revert the changes
With out Export : you will have 7.x datasource.