diff --git a/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/server/StatAlgoImporterServiceImpl.java b/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/server/StatAlgoImporterServiceImpl.java
index 8f0a885..a739156 100644
--- a/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/server/StatAlgoImporterServiceImpl.java
+++ b/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/server/StatAlgoImporterServiceImpl.java
@@ -609,7 +609,10 @@ public class StatAlgoImporterServiceImpl extends RemoteServiceServlet implements
 								code, project.getProjectFolder().getFolder().getId());
 						MainCode mainCode = new MainCode(mainCodeItemDescription);
 						project.setMainCode(mainCode);
-						project.setInputData(null);
+						InputData inputData=project.getInputData();
+						if(inputData!=null){
+							inputData.setListInputOutputVariables(null);
+						}
 						project.setProjectTarget(null);
 						WPS4RParser wps4Parser = new WPS4RParser(project, serviceCredentials);
 						project = wps4Parser.parse();