fix: move writeCarrierPlan(..) out of the if cases.

contribs/freight/src/main/java/org/matsim/contrib/freight/carrier/CarrierPlanXmlWriterV2_1.java

@@ -131,9 +131,9 @@ public void write(String filename, boolean createDirectory, String directoryPath
 						logger.warn("Failed to create directory: " + directoryPath);
 					}
 				}
-				writeCarrierPlan(filename);
 			}
 		}
+		writeCarrierPlan(filename);
 	}
 
 	private void writeRootElement() throws UncheckedIOException, IOException {