The Evidence Comparison widget is used to compare the answers to the same questionnaires entered at different times in order to see the differences between them. Notice that for consolidated answers, the widget provides a view link which enables a user to view the answers from the different sources.
The obvious situation in which there are differences between the two baselines for a given question is where the answers are actually different, for example, when circumstances have changed. It is important to note that the questions asked can also change over time, which means that it is possible to have a question present in one baseline but not in the other.
The UIM FIELD should have a source connection to a "display phase" server interface based on the domain EVIDENCE_COMPARISON_XML.