diff --git a/bt5/erp5_core_proxy_field_legacy/SkinTemplateItem/portal_skins/erp5_core_proxy_field_legacy/Base_viewFieldLibrary/my_thumbnail.xml b/bt5/erp5_core_proxy_field_legacy/SkinTemplateItem/portal_skins/erp5_core_proxy_field_legacy/Base_viewFieldLibrary/my_thumbnail.xml
index 5f25a5750fc30b317d974d61d32a862d7b4d27a2..473a467c08f0cc7507d1df6f63db6cda4b1b2750 100644
--- a/bt5/erp5_core_proxy_field_legacy/SkinTemplateItem/portal_skins/erp5_core_proxy_field_legacy/Base_viewFieldLibrary/my_thumbnail.xml
+++ b/bt5/erp5_core_proxy_field_legacy/SkinTemplateItem/portal_skins/erp5_core_proxy_field_legacy/Base_viewFieldLibrary/my_thumbnail.xml
@@ -178,18 +178,20 @@
                 </item>
                 <item>
                     <key> <string>image_pre_converted_only</string> </key>
-                    <value> <string></string> </value>
+                    <value>
+                      <persistent> <string encoding="base64">AAAAAAAAAAQ=</string> </persistent>
+                    </value>
                 </item>
                 <item>
                     <key> <string>image_quality</string> </key>
                     <value>
-                      <persistent> <string encoding="base64">AAAAAAAAAAQ=</string> </persistent>
+                      <persistent> <string encoding="base64">AAAAAAAAAAU=</string> </persistent>
                     </value>
                 </item>
                 <item>
                     <key> <string>image_resolution</string> </key>
                     <value>
-                      <persistent> <string encoding="base64">AAAAAAAAAAU=</string> </persistent>
+                      <persistent> <string encoding="base64">AAAAAAAAAAY=</string> </persistent>
                     </value>
                 </item>
                 <item>
@@ -277,7 +279,7 @@
                 </item>
                 <item>
                     <key> <string>image_pre_converted_only</string> </key>
-                    <value> <int>1</int> </value>
+                    <value> <int>0</int> </value>
                 </item>
                 <item>
                     <key> <string>image_quality</string> </key>
@@ -351,7 +353,7 @@
       <dictionary>
         <item>
             <key> <string>_text</string> </key>
-            <value> <string>python: here.portal_preferences.getPreferredImageQuality()</string> </value>
+            <value> <string>python: here.portal_preferences.getPreferredPreConvertedOnly()</string> </value>
         </item>
       </dictionary>
     </pickle>
@@ -369,4 +371,17 @@
       </dictionary>
     </pickle>
   </record>
+  <record id="6" aka="AAAAAAAAAAY=">
+    <pickle>
+      <global name="TALESMethod" module="Products.Formulator.TALESField"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>_text</string> </key>
+            <value> <string>python: here.portal_preferences.getPreferredImageQuality()</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
 </ZopeData>
diff --git a/bt5/erp5_core_proxy_field_legacy/bt/revision b/bt5/erp5_core_proxy_field_legacy/bt/revision
index bf0d87ab1b2b0ec1a11a3973d2845b42413d9767..7813681f5b41c028345ca62a2be376bae70b7f61 100644
--- a/bt5/erp5_core_proxy_field_legacy/bt/revision
+++ b/bt5/erp5_core_proxy_field_legacy/bt/revision
@@ -1 +1 @@
-4
\ No newline at end of file
+5
\ No newline at end of file