diff --git a/openpype/plugins/publish/integrate_hero_version.py b/openpype/plugins/publish/integrate_hero_version.py
index 05d383415b..e796f7b376 100644
--- a/openpype/plugins/publish/integrate_hero_version.py
+++ b/openpype/plugins/publish/integrate_hero_version.py
@@ -386,6 +386,25 @@ class IntegrateHeroVersion(pyblish.api.InstancePlugin):
                     repre["_id"] = old_repre["_id"]
                     update_data = prepare_representation_update_data(
                         old_repre, repre)
+
+                    # Keep previously synchronized sites up-to-date
+                    # by comparing old and new sites and adding old sites
+                    # if missing in new ones
+                    old_repre_files_sites = [
+                        f.get("sites", []) for f in old_repre.get("files", [])
+                    ]
+                    for i, file in enumerate(repre.get("files", [])):
+                        repre_sites_names = {
+                            s["name"] for s in file.get("sites", [])
+                        }
+                        for site in old_repre_files_sites[i]:
+                            if site["name"] not in repre_sites_names:
+                                # Pop the date to tag for sync
+                                site.pop("created_dt", None)
+                                file["sites"].append(site)
+
+                        update_data["files"][i] = file
+
                     op_session.update_entity(
                         project_name,
                         old_repre["type"],