diff --git a/android_app/app/src/main/java/com/health/openscale/core/datatypes/ScaleMeasurement.java b/android_app/app/src/main/java/com/health/openscale/core/datatypes/ScaleMeasurement.java
index 467d353d..4ac71df2 100644
--- a/android_app/app/src/main/java/com/health/openscale/core/datatypes/ScaleMeasurement.java
+++ b/android_app/app/src/main/java/com/health/openscale/core/datatypes/ScaleMeasurement.java
@@ -16,6 +16,7 @@
 
 package com.health.openscale.core.datatypes;
 
+import com.health.openscale.core.utils.CsvHelper;
 import com.j256.simplecsv.common.CsvColumn;
 
 import java.lang.reflect.Field;
@@ -45,8 +46,7 @@ public class ScaleMeasurement implements Cloneable {
     private int userId;
     @ColumnInfo(name = "enabled")
     private boolean enabled;
-    @CsvColumn(format = "dd.MM.yyyy HH:mm", mustNotBeBlank = true)
-    @ColumnInfo(name = "datetime")
+    @CsvColumn(converterClass = CsvHelper.DateTimeConverter.class, format ="yyyy-MM-dd HH:mm", mustNotBeBlank = true)    @ColumnInfo(name = "datetime")
     private Date dateTime;
     @CsvColumn(mustNotBeBlank = true)
     @ColumnInfo(name = "weight")
diff --git a/android_app/app/src/main/java/com/health/openscale/core/utils/CsvHelper.java b/android_app/app/src/main/java/com/health/openscale/core/utils/CsvHelper.java
index 981aa94b..2e17d45a 100644
--- a/android_app/app/src/main/java/com/health/openscale/core/utils/CsvHelper.java
+++ b/android_app/app/src/main/java/com/health/openscale/core/utils/CsvHelper.java
@@ -17,13 +17,18 @@
 package com.health.openscale.core.utils;
 
 import com.health.openscale.core.datatypes.ScaleMeasurement;
+import com.j256.simplecsv.converter.DateConverter;
+import com.j256.simplecsv.processor.ColumnInfo;
 import com.j256.simplecsv.processor.ColumnNameMatcher;
 import com.j256.simplecsv.processor.CsvProcessor;
+import com.j256.simplecsv.processor.ParseError;
 
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.Writer;
 import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
 import java.util.List;
 
 public class CsvHelper {
@@ -108,4 +113,22 @@ public class CsvHelper {
 
         return csvProcessor.readRows(reader, null);
     }
+
+    // backward compatible for openScale version >= 2.1.2 to support old date format dd.MM.yyyy, see issue #506
+    public static class DateTimeConverter extends DateConverter {
+        private static final SimpleDateFormat srcDateFormat = new SimpleDateFormat("dd.MM.yyyy HH:mm");
+        private static final SimpleDateFormat dstDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm");
+
+        @Override
+        public Date stringToJava(String line, int lineNumber, int linePos, ColumnInfo<Date> columnInfo, String value, ParseError parseError) throws ParseException{
+            try {
+                Date srcDate = srcDateFormat.parse(value);
+                value = dstDateFormat.format(srcDate);
+            } catch (ParseException ex) {
+                // ignore
+            }
+
+            return super.stringToJava(line, lineNumber, linePos, columnInfo, value, parseError);
+        }
+    }
 }