Hello,

Just in case, I wrote a small code to do the job (to be improved of course!).
It is just to display the members of a project area, who made the last modification and what was the member list at this time.
So it does not display the diff, but the state in which the project area was (only from the member list point of view).

I don't display the date of modification too.

Assume you have the project area (IProjectArea type), a monitor (IProgressMonitor type), a repository (ITeamRepository type) and a listProjectAreaMembers function (to display the project area members) :

IContributorHandle modifierHandle = projectArea.getModifiedBy();

IContributor modifier = repository.itemManager().fetchCompleteItem(modifierHandle, IItemManager.REFRESH, monitor);

System.out.println(modifier.getUserId());

IAuditableHandle it = projectArea.getPredecessorState();

IProjectArea prevPA=projectArea;

while(it != null)

{

    System.out.println("Change made by : ");

prevPA = (IProjectArea)repository.itemManager().fetchCompleteState(it, monitor);

    modifierHandle = prevPA.getModifiedBy();

    modifier = repository.itemManager().fetchCompleteItem(modifierHandle, IItemManager.REFRESH, monitor);          

    System.out.println(modifier.getUserId());

listProjectAreaMembers(prevPA);

it = prevPA.getPredecessorState();

}