diff --git a/app/src/main/java/com/etesync/syncadapter/resource/LocalContact.java b/app/src/main/java/com/etesync/syncadapter/resource/LocalContact.java
index f9e3dc35..97b47c8f 100644
--- a/app/src/main/java/com/etesync/syncadapter/resource/LocalContact.java
+++ b/app/src/main/java/com/etesync/syncadapter/resource/LocalContact.java
@@ -20,6 +20,9 @@ import android.provider.ContactsContract.RawContacts.Data;
 import android.support.annotation.NonNull;
 import android.text.TextUtils;
 
+import com.etesync.syncadapter.App;
+import com.etesync.syncadapter.model.UnknownProperties;
+
 import java.io.ByteArrayOutputStream;
 import java.io.FileNotFoundException;
 import java.io.IOException;
@@ -27,8 +30,6 @@ import java.util.HashSet;
 import java.util.Set;
 import java.util.logging.Level;
 
-import com.etesync.syncadapter.App;
-import com.etesync.syncadapter.model.UnknownProperties;
 import at.bitfire.vcard4android.AndroidAddressBook;
 import at.bitfire.vcard4android.AndroidContact;
 import at.bitfire.vcard4android.AndroidContactFactory;
@@ -44,6 +45,8 @@ import static at.bitfire.vcard4android.GroupMethod.GROUP_VCARDS;
 public class LocalContact extends AndroidContact implements LocalResource {
     public static final String COLUMN_HASHCODE = ContactsContract.RawContacts.SYNC3;
 
+    private boolean saveAsDirty = false; // When true, the resource will be saved as dirty
+
     protected final Set<Long>
             cachedGroupMemberships = new HashSet<>(),
             groupMemberships = new HashSet<>();
@@ -166,24 +169,40 @@ public class LocalContact extends AndroidContact implements LocalResource {
     public int update(Contact contact) throws ContactsStorageException {
         int result = super.update(contact);
 
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
+        if (!saveAsDirty && (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N))
             // workaround for Android 7 which sets DIRTY flag when only meta-data is changed
             updateHashCode();
 
         return result;
     }
 
+    public int updateAsDirty(Contact contact) throws ContactsStorageException {
+        saveAsDirty = true;
+        return this.update(contact);
+    }
+
     @Override
     public Uri create() throws ContactsStorageException {
         Uri uri = super.create();
 
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
+        if (!saveAsDirty && (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N))
             // workaround for Android 7 which sets DIRTY flag when only meta-data is changed
             updateHashCode();
 
         return uri;
     }
 
+    public Uri createAsDirty() throws ContactsStorageException {
+        saveAsDirty = true;
+        return this.create();
+    }
+
+    @Override
+    protected void buildContact(ContentProviderOperation.Builder builder, boolean update) {
+        super.buildContact(builder, update);
+        builder.withValue(ContactsContract.RawContacts.DIRTY, saveAsDirty ? 1 : 0);
+    }
+
     /**
      * Calculates a hash code from the contact's data (VCard) and group memberships.
      * @return hash code of contact data (including group memberships)
diff --git a/app/src/main/java/com/etesync/syncadapter/resource/LocalEvent.java b/app/src/main/java/com/etesync/syncadapter/resource/LocalEvent.java
index 0c230f2b..6b92546c 100644
--- a/app/src/main/java/com/etesync/syncadapter/resource/LocalEvent.java
+++ b/app/src/main/java/com/etesync/syncadapter/resource/LocalEvent.java
@@ -11,6 +11,7 @@ package com.etesync.syncadapter.resource;
 import android.annotation.TargetApi;
 import android.content.ContentProviderOperation;
 import android.content.ContentValues;
+import android.net.Uri;
 import android.os.Build;
 import android.os.RemoteException;
 import android.provider.CalendarContract;
@@ -18,11 +19,12 @@ import android.provider.CalendarContract.Events;
 import android.support.annotation.NonNull;
 import android.text.TextUtils;
 
+import com.etesync.syncadapter.App;
+
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.util.logging.Level;
 
-import com.etesync.syncadapter.App;
 import at.bitfire.ical4android.AndroidCalendar;
 import at.bitfire.ical4android.AndroidEvent;
 import at.bitfire.ical4android.AndroidEventFactory;
@@ -38,6 +40,8 @@ public class LocalEvent extends AndroidEvent implements LocalResource {
             COLUMN_UID = Build.VERSION.SDK_INT >= 17 ? Events.UID_2445 : Events.SYNC_DATA2,
             COLUMN_SEQUENCE = CalendarContract.Events.SYNC_DATA3;
 
+    private boolean saveAsDirty = false; // When true, the resource will be saved as dirty
+
     @Getter
     protected String fileName;
     @Getter
@@ -108,7 +112,7 @@ public class LocalEvent extends AndroidEvent implements LocalResource {
 
         builder.withValue(COLUMN_UID, event.uid)
                 .withValue(COLUMN_SEQUENCE, eventToBuild.sequence)
-                .withValue(CalendarContract.Events.DIRTY, 0)
+                .withValue(CalendarContract.Events.DIRTY, saveAsDirty ? 1 : 0)
                 .withValue(CalendarContract.Events.DELETED, 0);
 
         if (buildException)
@@ -118,6 +122,15 @@ public class LocalEvent extends AndroidEvent implements LocalResource {
                     .withValue(COLUMN_ETAG, eTag);
     }
 
+    public Uri addAsDirty() throws CalendarStorageException {
+        saveAsDirty = true;
+        return this.add();
+    }
+
+    public Uri updateAsDirty(Event event) throws CalendarStorageException {
+        saveAsDirty = true;
+        return this.update(event);
+    }
 
     /* custom queries */
 
@@ -155,7 +168,6 @@ public class LocalEvent extends AndroidEvent implements LocalResource {
         }
     }
 
-
     static class Factory implements AndroidEventFactory {
         static final Factory INSTANCE = new Factory();