// +-------+ +--------+
//
// 1) create new concurrent execution (CCE-1) replacing the the active scope execution (e)
PvmExecutionImpl replacingExecution = execution.createExecution();
replacingExecution.replace(execution); // only copy tasks(?)
replacingExecution.setActivity(execution.getActivity());
replacingExecution.setActive(execution.isActive());
replacingExecution.setScope(false);
replacingExecution.setConcurrent(true);