diff --git a/Backend/services/core/src/main/java/org/edu_sharing/repository/server/importer/OAIPMHLOMImporter.java b/Backend/services/core/src/main/java/org/edu_sharing/repository/server/importer/OAIPMHLOMImporter.java
index d82d2ee5d..7366590f2 100644
--- a/Backend/services/core/src/main/java/org/edu_sharing/repository/server/importer/OAIPMHLOMImporter.java
+++ b/Backend/services/core/src/main/java/org/edu_sharing/repository/server/importer/OAIPMHLOMImporter.java
@@ -133,7 +133,7 @@ public void startImport() throws Throwable{
 		
 		//take identifiers list cause some of the sets don't work: XML-Verarbeitungsfehler: nicht wohlgeformt
 		String url = this.oai_base_url+"?verb=ListIdentifiers&metadataPrefix="+this.metadataPrefix;
-		String setUrl = url+"&set="+set;
+		String setUrl = set.equals("-none-") ? url :  url+"&set="+set;
 		if(this.from != null && this.until != null){
 			String fromString = OAIConst.DATE_FORMAT.format(this.from);
 			String untilString = OAIConst.DATE_FORMAT.format(this.until);
diff --git a/Backend/services/core/src/main/java/org/edu_sharing/repository/server/importer/RecordHandlerDublinCoreDMG.java b/Backend/services/core/src/main/java/org/edu_sharing/repository/server/importer/RecordHandlerDublinCoreDMG.java
index 3287ecf64..5e5e5eaca 100644
--- a/Backend/services/core/src/main/java/org/edu_sharing/repository/server/importer/RecordHandlerDublinCoreDMG.java
+++ b/Backend/services/core/src/main/java/org/edu_sharing/repository/server/importer/RecordHandlerDublinCoreDMG.java
@@ -77,8 +77,13 @@ public void handleRecord(Node nodeRecord, String cursor, String set) throws Thro
 		
 		
 		String lomCatalogId = null;
-		if(replicationId != null && replicationId.split(":").length == 3){
-			lomCatalogId = replicationId.substring(0,replicationId.lastIndexOf(":"));
+		if(replicationId != null){
+			if(replicationId.split(":").length == 3) {
+				lomCatalogId = replicationId.substring(0, replicationId.lastIndexOf(":"));
+			}
+			if(replicationId.split(":").length == 2){
+				lomCatalogId = replicationId.split(":")[0];
+			}
 		}
 		
 		HashMap<String, Object> generalIdentifierToSafeMap = new HashMap<String, Object>();