diff --git a/History.md b/History.md
index 5bb276fc..beee2fe5 100644
--- a/History.md
+++ b/History.md
@@ -5,6 +5,7 @@
 - also import delivery address
 - 527 metrics raises errors
 - 517
+- 380
 - 518 corrently validate more XRechnung versions
 - make document charges and allowances serializable
 
diff --git a/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDImporter.java b/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDImporter.java
index cad7e624..d1dca813 100644
--- a/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDImporter.java
+++ b/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDImporter.java
@@ -14,55 +14,19 @@
  * @author jstaerk
  */
 import java.io.*;
-import java.math.BigDecimal;
-import java.nio.charset.StandardCharsets;
-import java.nio.file.Files;
-import java.nio.file.Paths;
-import java.nio.file.StandardOpenOption;
-import java.text.ParseException;
 import java.text.SimpleDateFormat;
 import java.util.*;
 
-import javax.xml.parsers.DocumentBuilder;
-import javax.xml.parsers.DocumentBuilderFactory;
-import javax.xml.parsers.ParserConfigurationException;
 import javax.xml.xpath.XPath;
 import javax.xml.xpath.XPathConstants;
 import javax.xml.xpath.XPathExpression;
-import javax.xml.xpath.XPathExpressionException;
 import javax.xml.xpath.XPathFactory;
 
-import org.apache.commons.io.IOUtils;
-import org.apache.fop.util.XMLUtil;
-
-import org.apache.pdfbox.Loader;
-import org.apache.pdfbox.io.IOUtils;
-import org.apache.pdfbox.pdmodel.PDDocument;
-import org.apache.pdfbox.pdmodel.PDDocumentNameDictionary;
-import org.apache.pdfbox.pdmodel.PDEmbeddedFilesNameTreeNode;
-import org.apache.pdfbox.pdmodel.common.PDNameTreeNode;
-import org.apache.pdfbox.pdmodel.common.filespecification.PDComplexFileSpecification;
-import org.apache.pdfbox.pdmodel.common.filespecification.PDEmbeddedFile;
 import org.mustangproject.*;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
-import org.w3c.dom.Document;
 import org.w3c.dom.Node;
 import org.w3c.dom.NodeList;
-import org.xml.sax.SAXException;
-
-import javax.xml.parsers.DocumentBuilder;
-import javax.xml.parsers.DocumentBuilderFactory;
-import javax.xml.parsers.ParserConfigurationException;
-import javax.xml.xpath.*;
-import java.io.*;
-import java.math.BigDecimal;
-import java.nio.charset.StandardCharsets;
-import java.nio.file.Files;
-import java.nio.file.Paths;
-import java.nio.file.StandardOpenOption;
-import java.text.SimpleDateFormat;
-import java.util.*;
 
 public class ZUGFeRDImporter extends ZUGFeRDInvoiceImporter {
 	private static final Logger LOGGER = LoggerFactory.getLogger(ZUGFeRDImporter.class);