store original doc uuid in metadata

lib/submitters.rb

@@ -24,7 +24,8 @@ module Submitters
     is_more_than_two_images = original_documents.count(&:image?) > 1
 
     submitter.documents.preload(:blob).reject do |attachment|
-      is_more_than_two_images && original_documents.find { |a| a.uuid == attachment.uuid }&.image?
+      is_more_than_two_images &&
+        original_documents.find { |a| a.uuid == (attachment.metadata['original_uuid'] || attachment.uuid) }&.image?
     end
   end