diff --git a/app/models/metadata_document_date.rb b/app/models/metadata_document_date.rb
index 312bb3a..7512cbf 100644
--- a/app/models/metadata_document_date.rb
+++ b/app/models/metadata_document_date.rb
@@ -8,7 +8,7 @@ class MetadataDocumentDate < MetadataTemplate
   end
 
   def value_from_document
-    return nil unless document.path
+    return nil if post.new?
 
     document.date
   end
diff --git a/app/models/post.rb b/app/models/post.rb
index 461733f..13e8a91 100644
--- a/app/models/post.rb
+++ b/app/models/post.rb
@@ -49,9 +49,7 @@ class Post
       public_send(attr)&.value = args[attr] if args.key?(attr)
     end
 
-    # XXX: No usamos Post#read porque a esta altura todavía no sabemos
-    # nada del Document
-    document.read! if File.exist? document.path
+    document.read! unless new?
   end
 
   def inspect