FIX: Crawler overwrites and deletes existing data

src/caoscrawler/crawl.py

@@ -745,6 +745,7 @@ class Crawler(object):
                             record._size = identified_record._size
                             record._checksum = identified_record._checksum
 
+                        merge_entities(record, identified_record)
                         to_be_updated.append(record)
                         self.add_to_remote_existing_cache(record)
                         del flat[i]