Bug #534959 introduced a GWT view that shows N configurations compared to each other. However, this view does not support viewing diffs of lists and maps. We need to add support for that. It would be nice to see diffs of N configurations whose list and/or map properties differ.
The code to start looking at is here:
org.rhq.enterprise.gui.coregui.client.components.configuration.ConfigurationComparisonView.buildNode(TreeNode, Collection<PropertyDefinition>, List<? extends AbstractPropertyMap>)
There is a TODO that shows where the code probably should go:
// TODO Add support for maps and lists of maps