diff --git a/kraftwerk-core/src/main/java/fr/insee/kraftwerk/core/extradata/reportingdata/CSVReportingDataParser.java b/kraftwerk-core/src/main/java/fr/insee/kraftwerk/core/extradata/reportingdata/CSVReportingDataParser.java
index 086f9575..353d3557 100644
--- a/kraftwerk-core/src/main/java/fr/insee/kraftwerk/core/extradata/reportingdata/CSVReportingDataParser.java
+++ b/kraftwerk-core/src/main/java/fr/insee/kraftwerk/core/extradata/reportingdata/CSVReportingDataParser.java
@@ -81,7 +81,7 @@ public long convertToTimestamp(String rowTimestamp) {
 			log.error("Parsing error : the parsed date is null");
 			return 0L;
 		}
-		return TimeUnit.MILLISECONDS.toSeconds(parsedDate.getTime());
+		return parsedDate.getTime();
 	}
 
 	/**
diff --git a/kraftwerk-core/src/main/java/fr/insee/kraftwerk/core/extradata/reportingdata/ReportingDataParser.java b/kraftwerk-core/src/main/java/fr/insee/kraftwerk/core/extradata/reportingdata/ReportingDataParser.java
index 1bdf5387..18376a4f 100644
--- a/kraftwerk-core/src/main/java/fr/insee/kraftwerk/core/extradata/reportingdata/ReportingDataParser.java
+++ b/kraftwerk-core/src/main/java/fr/insee/kraftwerk/core/extradata/reportingdata/ReportingDataParser.java
@@ -10,7 +10,7 @@
 import fr.insee.kraftwerk.core.utils.files.FileUtilsInterface;
 import lombok.extern.log4j.Log4j2;
 
-import java.sql.Date;
+import java.util.Date;
 import java.text.SimpleDateFormat;
 import java.util.ArrayList;
 import java.util.List;
diff --git a/kraftwerk-core/src/main/java/fr/insee/kraftwerk/core/utils/DateUtils.java b/kraftwerk-core/src/main/java/fr/insee/kraftwerk/core/utils/DateUtils.java
index 95bdea3a..ee6840b4 100644
--- a/kraftwerk-core/src/main/java/fr/insee/kraftwerk/core/utils/DateUtils.java
+++ b/kraftwerk-core/src/main/java/fr/insee/kraftwerk/core/utils/DateUtils.java
@@ -32,6 +32,6 @@ public static long convertToTimestamp(String rowTimestamp, SimpleDateFormat date
 			log.error("Parsing error : {}", e1.getMessage());
 			return 0L;
 		}
-		return TimeUnit.MILLISECONDS.toSeconds(parsedDate.getTime());
+		return parsedDate.getTime();
 	}
 }
diff --git a/kraftwerk-core/src/test/java/fr/insee/kraftwerk/core/utils/DateUtilsTest.java b/kraftwerk-core/src/test/java/fr/insee/kraftwerk/core/utils/DateUtilsTest.java
index 3a778bf9..f2b43891 100644
--- a/kraftwerk-core/src/test/java/fr/insee/kraftwerk/core/utils/DateUtilsTest.java
+++ b/kraftwerk-core/src/test/java/fr/insee/kraftwerk/core/utils/DateUtilsTest.java
@@ -10,10 +10,12 @@ class DateUtilsTest {
 
 	@Test
 	void convertDateTest() {
-		assertEquals(1645007098, DateUtils.convertToTimestamp("16/02/2022 11:24:58", new SimpleDateFormat("dd/MM/yyyy HH:mm:ss")));
-		assertEquals(1566544132, DateUtils.convertToTimestamp("23/08/2019 09:08:52", new SimpleDateFormat("dd/MM/yyyy HH:mm:ss")));
-		assertEquals(1111111111, DateUtils.convertToTimestamp("18/03/2005 02:58:31", new SimpleDateFormat("dd/MM/yyyy HH:mm:ss")));
-		assertEquals(1, DateUtils.convertToTimestamp("01/01/1970 01:00:01", new SimpleDateFormat("dd/MM/yyyy HH:mm:ss")));
+		assertEquals(1645007098000L, DateUtils.convertToTimestamp("16/02/2022 11:24:58", new SimpleDateFormat("dd/MM" +
+				"/yyyy HH:mm:ss")));
+		assertEquals(1566544132000L, DateUtils.convertToTimestamp("23/08/2019 09:08:52", new SimpleDateFormat("dd/MM" +
+				"/yyyy HH:mm:ss")));
+		assertEquals(1111111111000L, DateUtils.convertToTimestamp("18/03/2005 02:58:31", new SimpleDateFormat("dd/MM/yyyy HH:mm:ss")));
+		assertEquals(1000L, DateUtils.convertToTimestamp("01/01/1970 01:00:01", new SimpleDateFormat("dd/MM/yyyy HH:mm:ss")));
 		
 	}