diff --git a/app/models/metadata_file.rb b/app/models/metadata_file.rb
index fcabf05d..8fecf553 100644
--- a/app/models/metadata_file.rb
+++ b/app/models/metadata_file.rb
@@ -73,10 +73,14 @@ class MetadataFile < MetadataTemplate
     end
   end
 
+  def key_from_path
+    path.dirname.basename.to_s
+  end
+
   private
 
   def path?
-    !value['path'].blank?
+    value['path'].present?
   end
 
   def filemagic
@@ -100,10 +104,6 @@ class MetadataFile < MetadataTemplate
     end
   end
 
-  def key_from_path
-    path.dirname.basename.to_s
-  end
-
   # Hacemos un link duro para colocar el archivo dentro del repositorio
   # y no duplicar el espacio que ocupan.  Esto requiere que ambos
   # directorios estén dentro del mismo punto de montaje.
diff --git a/app/models/site/static_file_migration.rb b/app/models/site/static_file_migration.rb
index 798601a5..614f63dd 100644
--- a/app/models/site/static_file_migration.rb
+++ b/app/models/site/static_file_migration.rb
@@ -42,6 +42,7 @@ class Site
               metadata = doc.public_send(field)
 
               next if metadata.value['path'].blank?
+              next if ActiveStorage::Blob.find_by(key: metadata.key_from_path)
 
               path = Pathname.new(metadata.value['path'])