diff --git a/datastore_server/source/java/ch/systemsx/cisd/openbis/dss/generic/shared/api/v1/NewDataSetMetadataDTO.java b/datastore_server/source/java/ch/systemsx/cisd/openbis/dss/generic/shared/api/v1/NewDataSetMetadataDTO.java
index 11716013e5977385723d37489f90950daf585e06..bdf5719e27669375e91eb64414db3b88e9a0990f 100644
--- a/datastore_server/source/java/ch/systemsx/cisd/openbis/dss/generic/shared/api/v1/NewDataSetMetadataDTO.java
+++ b/datastore_server/source/java/ch/systemsx/cisd/openbis/dss/generic/shared/api/v1/NewDataSetMetadataDTO.java
@@ -100,7 +100,6 @@ public class NewDataSetMetadataDTO implements Serializable
 
     public void setProperties(Map<String, String> props)
     {
-        properties.clear();
         if (props != null)
         {
             properties.putAll(props);