diff --git a/org.fortiss.af3.exploration.alg/trunk/src/org/fortiss/af3/exploration/alg/dse/backend/opt4j/Opt4JExplorerBackend.java b/org.fortiss.af3.exploration.alg/trunk/src/org/fortiss/af3/exploration/alg/dse/backend/opt4j/Opt4JExplorerBackend.java
index aaf7084367441623ae8f1091d044470f14fde97a..34e4d322eb3f2b60d82c2ee35dd0a235d4c43423 100644
--- a/org.fortiss.af3.exploration.alg/trunk/src/org/fortiss/af3/exploration/alg/dse/backend/opt4j/Opt4JExplorerBackend.java
+++ b/org.fortiss.af3.exploration.alg/trunk/src/org/fortiss/af3/exploration/alg/dse/backend/opt4j/Opt4JExplorerBackend.java
@@ -22,6 +22,7 @@ import static org.fortiss.tooling.kernel.utils.EcoreUtils.pickInstanceOf;
 
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
 import java.util.Map.Entry;
@@ -298,8 +299,10 @@ public class Opt4JExplorerBackend extends ExplorerBackendBase<EAOptimizer> {
 			// Create a new archive with the same individuals that have only objective evaluations.
 			// TODO: For robust optimization, we should also consider a distance metric to the
 			// constraint's bounds.
+			Map<Individual, Objectives> completeObjectives = new HashMap<>();
 			for(Individual curIndividual : feasibleIndividuals) {
 				Objectives oldObjectives = curIndividual.getObjectives();
+				completeObjectives.put(curIndividual, oldObjectives);
 				Objectives reducedObjectives = new Objectives();
 				for(Entry<Objective, Value<?>> singleObjective : oldObjectives) {
 					if(objectiveSet.contains(singleObjective.getKey())) {
@@ -310,6 +313,13 @@ public class Opt4JExplorerBackend extends ExplorerBackendBase<EAOptimizer> {
 				archive.update(curIndividual);
 			}
 
+			// However, readd the complete objective set afterwards such that all evaluations are
+			// available (including the constraint evaluations).
+			for(Individual curIndividual : feasibleIndividuals) {
+				Objectives origObjectives = completeObjectives.get(curIndividual);
+				curIndividual.setObjectives(origObjectives);
+			}
+
 			rval =
 					new Opt4JExplorationSolutionSet<ArchitectureSolution>(archive, targetAssocMap,
 							archExplorationProblemModule);