diff --git a/antarest/study/model.py b/antarest/study/model.py
index f8218fd31d..4307e99945 100644
--- a/antarest/study/model.py
+++ b/antarest/study/model.py
@@ -88,6 +88,12 @@ class Tag(Base):  # type:ignore
     def __str__(self) -> str:
         return f"[Tag] label={self.label}, css-color-code={self.color}"
 
+    def __repr__(self) -> str:
+        cls = self.__class__.__name__
+        label = getattr(self, "label", None)
+        color = getattr(self, "color", None)
+        return f"{cls}(label={label!r}, color={color!r})"
+
 
 class StudyContentStatus(enum.Enum):
     VALID = "VALID"
diff --git a/antarest/study/service.py b/antarest/study/service.py
index 20d4640ffe..0a5cbe3875 100644
--- a/antarest/study/service.py
+++ b/antarest/study/service.py
@@ -527,7 +527,7 @@ def update_study_information(
             params.get_user_id(),
         )
         study = self.get_study(uuid)
-        assert_permission(params.user, study, StudyPermissionType.READ)
+        assert_permission(params.user, study, StudyPermissionType.WRITE)
 
         if metadata_patch.horizon:
             study_settings_url = "settings/generaldata/general"
@@ -550,9 +550,8 @@ def update_study_information(
             study.additional_data.author = metadata_patch.author
         if metadata_patch.horizon:
             study.additional_data.horizon = metadata_patch.horizon
-
-        new_tags = metadata_patch.tags
-        self.repository.update_tags(study, new_tags)
+        if metadata_patch.tags:
+            self.repository.update_tags(study, metadata_patch.tags)
 
         new_metadata = self.storage_service.get_storage(study).patch_update_study_metadata(study, metadata_patch)
 
diff --git a/antarest/study/storage/abstract_storage_service.py b/antarest/study/storage/abstract_storage_service.py
index cd6b8be080..af76bf533d 100644
--- a/antarest/study/storage/abstract_storage_service.py
+++ b/antarest/study/storage/abstract_storage_service.py
@@ -1,3 +1,4 @@
+import json
 import logging
 import shutil
 import tempfile
@@ -74,8 +75,10 @@ def get_study_information(
         additional_data = study.additional_data or StudyAdditionalData()
 
         try:
-            patch = Patch.parse_raw(additional_data.patch or "{}")
-        except Exception as e:
+            patch_obj = json.loads(additional_data.patch or "{}")
+            patch = Patch.parse_obj(patch_obj)
+        except ValueError as e:
+            # The conversion to JSON and the parsing can fail if the patch is not valid
             logger.warning(f"Failed to parse patch for study {study.id}", exc_info=e)
             patch = Patch()
 
diff --git a/antarest/study/storage/patch_service.py b/antarest/study/storage/patch_service.py
index c71833beb2..e3ece9071e 100644
--- a/antarest/study/storage/patch_service.py
+++ b/antarest/study/storage/patch_service.py
@@ -53,6 +53,6 @@ def save(self, study: Union[RawStudy, VariantStudy], patch: Patch) -> None:
             study.additional_data.patch = patch.json()
             self.repository.save(study)
 
-        patch_content = patch.json()
         patch_path = (Path(study.path)) / "patch.json"
-        patch_path.write_text(patch_content)
+        patch_path.parent.mkdir(parents=True, exist_ok=True)
+        patch_path.write_text(patch.json())
diff --git a/antarest/study/web/studies_blueprint.py b/antarest/study/web/studies_blueprint.py
index f4b7a5e741..beeecd65c5 100644
--- a/antarest/study/web/studies_blueprint.py
+++ b/antarest/study/web/studies_blueprint.py
@@ -803,7 +803,7 @@ def archive_study(
 
     @bp.put(
         "/studies/{study_id}/unarchive",
-        summary="Dearchive a study",
+        summary="Unarchive a study",
         tags=[APITag.study_management],
     )
     def unarchive_study(
@@ -815,19 +815,6 @@ def unarchive_study(
         params = RequestParameters(user=current_user)
         return study_service.unarchive(study_id, params)
 
-    @bp.post(
-        "/studies/_invalidate_cache_listing",
-        summary="Invalidate the study listing cache [DEPRECATED] and will be removed soon",
-        tags=[APITag.study_management],
-    )
-    def invalidate_study_listing_cache(
-        current_user: JWTUser = Depends(auth.get_current_user),
-    ) -> t.Any:
-        logger.info(
-            "Invalidating the study listing cache endpoint is deprecated",
-            extra={"user": current_user.id},
-        )
-
     @bp.get(
         "/studies/{uuid}/disk-usage",
         summary="Compute study disk usage",
diff --git a/tests/integration/studies_blueprint/test_get_studies.py b/tests/integration/studies_blueprint/test_get_studies.py
index c9bf08bb62..869466e9f4 100644
--- a/tests/integration/studies_blueprint/test_get_studies.py
+++ b/tests/integration/studies_blueprint/test_get_studies.py
@@ -358,7 +358,9 @@ def test_study_listing(
         )
         assert res.status_code in CREATE_STATUS_CODES, res.json()
         res = client.get(
-            STUDIES_URL, headers={"Authorization": f"Bearer {admin_access_token}"}, params={"name": "decennial-raw-850"}
+            STUDIES_URL,
+            headers={"Authorization": f"Bearer {admin_access_token}"},
+            params={"name": "decennial-raw-850"},
         )
         assert res.status_code == LIST_STATUS_CODE, res.json()
         study_map: t.Dict[str, t.Dict[str, t.Any]] = res.json()
@@ -373,14 +375,6 @@ def test_study_listing(
         )
         assert res.status_code in CREATE_STATUS_CODES, res.json()
         tagged_variant_840_id = res.json()
-        res = client.put(
-            f"{STUDIES_URL}/{tagged_variant_840_id}/generate",
-            headers={"Authorization": f"Bearer {admin_access_token}"},
-        )
-        assert res.status_code == LIST_STATUS_CODE, res.json()
-        generation_task_id = res.json()
-        task = wait_task_completion(client, admin_access_token, generation_task_id)
-        assert task.status == TaskStatus.COMPLETED, task
         res = client.put(
             f"{STUDIES_URL}/{tagged_variant_840_id}",
             headers={"Authorization": f"Bearer {admin_access_token}"},
@@ -405,14 +399,6 @@ def test_study_listing(
         )
         assert res.status_code in CREATE_STATUS_CODES, res.json()
         tagged_variant_850_id = res.json()
-        res = client.put(
-            f"{STUDIES_URL}/{tagged_variant_850_id}/generate",
-            headers={"Authorization": f"Bearer {admin_access_token}"},
-        )
-        assert res.status_code == LIST_STATUS_CODE, res.json()
-        generation_task_id = res.json()
-        task = wait_task_completion(client, admin_access_token, generation_task_id)
-        assert task.status == TaskStatus.COMPLETED, task
         res = client.put(
             f"{STUDIES_URL}/{tagged_variant_850_id}",
             headers={"Authorization": f"Bearer {admin_access_token}"},
diff --git a/tests/integration/test_integration.py b/tests/integration/test_integration.py
index 03e3cbafe6..ffa4d4a91d 100644
--- a/tests/integration/test_integration.py
+++ b/tests/integration/test_integration.py
@@ -223,9 +223,6 @@ def test_main(client: TestClient, admin_access_token: str, study_id: str) -> Non
     assert len(res.json()) == 3
     assert filter(lambda s: s["id"] == copied.json(), res.json().values()).__next__()["folder"] == "foo/bar"
 
-    res = client.post("/v1/studies/_invalidate_cache_listing", headers=admin_headers)
-    assert res.status_code == 200
-
     # Study delete
     client.delete(
         f"/v1/studies/{copied.json()}",