diff --git a/.env b/.env
index be38e1c6ca..80272828fb 100644
--- a/.env
+++ b/.env
@@ -133,7 +133,7 @@ PHRASEANET_DOCKER_REGISTRY=local
 
 # Docker images tag.
 # @run
-PHRASEANET_DOCKER_TAG=4.1.8-rc5
+PHRASEANET_DOCKER_TAG=4.1.8-rc6
 
 # Stack Name
 # An optionnal Name for the stack
diff --git a/lib/Alchemy/Phrasea/Core/Version.php b/lib/Alchemy/Phrasea/Core/Version.php
index eab14c1789..ed7b9b1805 100644
--- a/lib/Alchemy/Phrasea/Core/Version.php
+++ b/lib/Alchemy/Phrasea/Core/Version.php
@@ -17,7 +17,7 @@ class Version
      * @var string
      */
 
-    private $number = '4.1.8-rc5';
+    private $number = '4.1.8-rc6';
 
     /**
      * @var string
diff --git a/lib/Alchemy/Phrasea/WorkerManager/Subscriber/RecordSubscriber.php b/lib/Alchemy/Phrasea/WorkerManager/Subscriber/RecordSubscriber.php
index 92b6133856..781cb550a4 100644
--- a/lib/Alchemy/Phrasea/WorkerManager/Subscriber/RecordSubscriber.php
+++ b/lib/Alchemy/Phrasea/WorkerManager/Subscriber/RecordSubscriber.php
@@ -154,6 +154,7 @@ class RecordSubscriber implements EventSubscriberInterface
     {
         $databoxId = $event->getDataboxId();
         $recordIds = $event->getRecordIds();
+        $acceptedMimeTypes = $this->app['conf']->get(['workers', 'writeMetadatas', 'acceptedMimeType'], []);
 
         foreach ($recordIds as $recordId) {
             $mediaSubdefRepository = $this->getMediaSubdefRepository($databoxId);
@@ -173,7 +174,13 @@ class RecordSubscriber implements EventSubscriberInterface
 
             foreach ($mediaSubdefs as $subdef) {
                 // check subdefmetadatarequired  from the subview setup in admin
-                if (($subdef->get_name() == 'document' && $toWritemetaOriginalDocument) || $this->isSubdefMetadataUpdateRequired($databox, $type, $subdef->get_name())) {
+                // check if we want to write meta in this mime type
+                if (in_array(trim($subdef->get_mime()), $acceptedMimeTypes) &&
+                    (
+                        ($subdef->get_name() == 'document' && $toWritemetaOriginalDocument) ||
+                        $this->isSubdefMetadataUpdateRequired($databox, $type, $subdef->get_name())
+                    )
+                ) {
                     $payload = [
                         'message_type' => MessagePublisher::WRITE_METADATAS_TYPE,
                         'payload' => [
@@ -182,7 +189,6 @@ class RecordSubscriber implements EventSubscriberInterface
                             'subdefName'  => $subdef->get_name()
                         ]
                     ];
-
                     if ($subdef->is_physically_present()) {
                         $this->messagePublisher->publishMessage($payload, MessagePublisher::WRITE_METADATAS_TYPE);
                     }
@@ -273,6 +279,8 @@ class RecordSubscriber implements EventSubscriberInterface
 
         }
         else {
+            $acceptedMimeTypes = $this->app['conf']->get(['workers', 'writeMetadatas', 'acceptedMimeType'], []);
+
             $databoxId = $event->getRecord()->getDataboxId();
             $recordId = $event->getRecord()->getRecordId();
 
@@ -291,7 +299,13 @@ class RecordSubscriber implements EventSubscriberInterface
             }
 
             //  only the required writemetadata from admin > subview setup is to be writing
-            if (($subdef->get_name() == 'document' && $toWritemetaOriginalDocument) || $this->isSubdefMetadataUpdateRequired($databox, $type, $subdef->get_name())) {
+            //  check if we want to write meta in this mime type
+            if (in_array($subdef->get_mime(), $acceptedMimeTypes) &&
+                (
+                    ($subdef->get_name() == 'document' && $toWritemetaOriginalDocument) ||
+                    $this->isSubdefMetadataUpdateRequired($databox, $type, $subdef->get_name())
+                )
+            ) {
                 $payload = [
                     'message_type' => MessagePublisher::WRITE_METADATAS_TYPE,
                     'payload' => [
diff --git a/lib/classes/patch/418RC6.php b/lib/classes/patch/418RC6.php
new file mode 100644
index 0000000000..3b4aff11d3
--- /dev/null
+++ b/lib/classes/patch/418RC6.php
@@ -0,0 +1,87 @@
+<?php
+
+use Alchemy\Phrasea\Application;
+use Alchemy\Phrasea\Core\Configuration\PropertyAccess;
+
+class patch_418RC6 implements patchInterface
+{
+    /** @var string */
+    private $release = '4.1.8-rc6';
+
+    /** @var array */
+    private $concern = [base::APPLICATION_BOX];
+
+    /**
+     * {@inheritdoc}
+     */
+    public function get_release()
+    {
+        return $this->release;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getDoctrineMigrations()
+    {
+        return [];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function require_all_upgrades()
+    {
+        return false;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function concern()
+    {
+        return $this->concern;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function apply(base $base, Application $app)
+    {
+        if ($base->get_base_type() === base::DATA_BOX) {
+            $this->patch_databox($base, $app);
+        } elseif ($base->get_base_type() === base::APPLICATION_BOX) {
+            $this->patch_appbox($base, $app);
+        }
+
+        return true;
+    }
+
+    private function patch_databox(databox $databox, Application $app)
+    {
+    }
+
+    private function patch_appbox(base $appbox, Application $app)
+    {
+        /** @var PropertyAccess $conf */
+        $conf = $app['conf'];
+
+        // PHRAS-3889
+        if (!$conf->has(['workers', 'writeMetadatas', 'acceptedMimeType'])) {
+            $defaultAcceptedMimeType = [
+                'image/jpeg',
+                'image/png',
+                'application/postscript',
+                'application/pdf',
+                'image/tiff'
+            ];
+
+            $conf->set(['workers', 'writeMetadatas', 'acceptedMimeType'], $defaultAcceptedMimeType);
+        }
+
+        // PHRAS-3896
+        if ($conf->get(['main', 'search-engine', 'options', 'populate_order']) != 'RECORD_ID') {
+            $conf->set(['main', 'search-engine', 'options', 'populate_order'], 'RECORD_ID');
+        }
+    }
+}
diff --git a/lib/conf.d/configuration.yml b/lib/conf.d/configuration.yml
index 282e693441..dab5d447e5 100644
--- a/lib/conf.d/configuration.yml
+++ b/lib/conf.d/configuration.yml
@@ -416,6 +416,13 @@ workers:
             max_retry: 3
             ttl_retry: 10000
             ttl_delayed: 5000
+    writeMetadatas:
+        acceptedMimeType:
+            - image/jpeg
+            - image/png
+            - application/postscript
+            - application/pdf
+            - image/tiff
 externalservice:
     ginger:
         AutoSubtitling: