diff --git a/shanoir-ng-import/src/main/java/org/shanoir/ng/importer/ImporterApiController.java b/shanoir-ng-import/src/main/java/org/shanoir/ng/importer/ImporterApiController.java
index 01585a3d2f..ca0c23c297 100644
--- a/shanoir-ng-import/src/main/java/org/shanoir/ng/importer/ImporterApiController.java
+++ b/shanoir-ng-import/src/main/java/org/shanoir/ng/importer/ImporterApiController.java
@@ -75,8 +75,6 @@
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.core.io.ByteArrayResource;
-import org.springframework.http.HttpEntity;
-import org.springframework.http.HttpMethod;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.HttpStatusCode;
 import org.springframework.http.MediaType;
@@ -87,7 +85,6 @@
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
-import org.springframework.web.client.RestTemplate;
 import org.springframework.web.multipart.MultipartFile;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
@@ -145,9 +142,6 @@ public class ImporterApiController implements ImporterApi {
 	@Value("${shanoir.import.directory}")
 	private String importDir;
 
-	@Autowired
-	private RestTemplate restTemplate;
-
 	@Autowired
 	private DicomDirGeneratorService dicomDirGeneratorService;
 
@@ -279,6 +273,15 @@ public ResponseEntity<Void> startImportJob(
 		}
 	}
 
+	/**
+	 * cleanSeries is important here for import-from-zip file: when the ImagesCreatorAndDicomFileAnalyzer
+	 * has declared some series as e.g. erroneous, we have to remove them from the import. For import-from
+	 * pacs or from-sh-up it is different, as the ImagesCreatorAndDicomFileAnalyzer is called afterwards.
+	 * Same here for multi-exam-imports: it calls uploadDicomZipFile method, where series could be classed
+	 * as erroneous and when startImportJob is called, we want them to be removed from the import.
+	 * 
+	 * @param importJob
+	 */
 	private void cleanSeries(final ImportJob importJob) {
 		for (Iterator<Patient> patientIt = importJob.getPatients().iterator(); patientIt.hasNext();) {
 			Patient patient = patientIt.next();
@@ -309,7 +312,6 @@ public ResponseEntity<ImportJob> queryPACS(
 			importJob.setWorkFolder("");
 			importJob.setFromPacs(true);
 			importJob.setUserId(KeycloakUtil.getTokenUserId());
-
 		} catch (ShanoirException e) {
 			throw new RestServiceException(
 					new ErrorModel(HttpStatus.UNPROCESSABLE_ENTITY.value(), e.getMessage(), null));
@@ -332,12 +334,11 @@ public ResponseEntity<ImportJob> importDicomZipFile(
 		MockMultipartFile multiPartFile;
 		try {
 			multiPartFile = new MockMultipartFile(tempFile.getName(), tempFile.getName(), APPLICATION_ZIP, new FileInputStream(tempFile.getAbsolutePath()));
-
 			// Import dicomfile
 			return uploadDicomZipFile(multiPartFile);
 		} catch (IOException e) {
 			LOG.error("ERROR while loading zip fiole, please contact an administrator");
-			e.printStackTrace();
+			LOG.error(e.getMessage(), e);
 			return new ResponseEntity<>(HttpStatus.NOT_ACCEPTABLE);
 		} finally {
 			// Delete temp file which is useless now
@@ -374,12 +375,9 @@ public ResponseEntity<EegImportJob> uploadEEGZipFile(
 			if (!userImportDir.exists()) {
 				userImportDir.mkdirs(); // create if not yet existing
 			}
-
 			// Unzip the file and get the elements
 			File tempFile = ImportUtils.saveTempFile(userImportDir, eegFile);
-
 			File importJobDir = ImportUtils.saveTempFileCreateFolderAndUnzip(tempFile, eegFile, false);
-
 			EegImportJob importJob = new EegImportJob();
 			importJob.setUserId(userId);
 			importJob.setArchive(eegFile.getOriginalFilename());