diff --git a/sci-publications/src/main/java/org/scientificcms/publications/AbstractPublicationImExporter.java b/sci-publications/src/main/java/org/scientificcms/publications/AbstractPublicationImExporter.java
index ee11ed6..a08f448 100644
--- a/sci-publications/src/main/java/org/scientificcms/publications/AbstractPublicationImExporter.java
+++ b/sci-publications/src/main/java/org/scientificcms/publications/AbstractPublicationImExporter.java
@@ -3,7 +3,9 @@ package org.scientificcms.publications;
 import org.libreccm.imexport.AbstractEntityImExporter;
 
 import java.util.Objects;
+import java.util.Optional;
 
+import javax.annotation.PostConstruct;
 import javax.inject.Inject;
 
 /**
@@ -17,6 +19,19 @@ public abstract class AbstractPublicationImExporter<T extends Publication>
     @Inject
     private PublicationRepository publicationRepo;
 
+    @Override
+    @PostConstruct
+    protected final void init() {
+        initPublicationImExporter();
+    }
+    
+    protected abstract void initPublicationImExporter();
+
+    @Override
+    protected Optional<T> findExistingEntity(final String uuid) {
+        return publicationRepo.findByUuidAndType(uuid, getEntityClass());
+    }
+
     @Override
     protected void saveImportedEntity(final Publication publication) {
         publicationRepo.save(publication);
@@ -100,7 +115,7 @@ public abstract class AbstractPublicationImExporter<T extends Publication>
                 importedEntity.getLanguageOfPublication()
             );
         }
-        
+
         updateExistingPublication(existingEntity, importedEntity);
 
         publicationRepo.save(existingEntity);
diff --git a/sci-publications/src/main/java/org/scientificcms/publications/AbstractPublicationWithPublisherImExporter.java b/sci-publications/src/main/java/org/scientificcms/publications/AbstractPublicationWithPublisherImExporter.java
index 621d208..8456220 100644
--- a/sci-publications/src/main/java/org/scientificcms/publications/AbstractPublicationWithPublisherImExporter.java
+++ b/sci-publications/src/main/java/org/scientificcms/publications/AbstractPublicationWithPublisherImExporter.java
@@ -13,9 +13,8 @@ import javax.annotation.PostConstruct;
 public abstract class AbstractPublicationWithPublisherImExporter<T extends PublicationWithPublisher>
     extends AbstractPublicationImExporter<T> {
     
-    @PostConstruct
     @Override
-    protected final void init() {
+    protected final void initPublicationImExporter() {
         addRequiredEntities(
             Set.of(
                 Publisher.class
diff --git a/sci-publications/src/main/java/org/scientificcms/publications/AbstractUnPublishedImExporter.java b/sci-publications/src/main/java/org/scientificcms/publications/AbstractUnPublishedImExporter.java
index 769075c..d07c7e9 100644
--- a/sci-publications/src/main/java/org/scientificcms/publications/AbstractUnPublishedImExporter.java
+++ b/sci-publications/src/main/java/org/scientificcms/publications/AbstractUnPublishedImExporter.java
@@ -4,8 +4,6 @@ import org.librecms.assets.Organization;
 
 import java.util.Set;
 
-import javax.annotation.PostConstruct;
-
 /**
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
@@ -14,14 +12,15 @@ import javax.annotation.PostConstruct;
 public abstract class AbstractUnPublishedImExporter<T extends UnPublished>
     extends AbstractPublicationImExporter<T> {
 
-    @PostConstruct
     @Override
-    protected final void init() {
+    protected final void initPublicationImExporter() {
         addRequiredEntities(
             Set.of(Organization.class)
         );
+
+        initUnPublishedImExporter();
     }
-    
+
     protected abstract void initUnPublishedImExporter();
-    
+
 }