diff --git a/cads_catalogue/manager.py b/cads_catalogue/manager.py
index 3a26c6a..c0fe24d 100644
--- a/cads_catalogue/manager.py
+++ b/cads_catalogue/manager.py
@@ -268,7 +268,7 @@ def load_resource_metadata_file(folder_path: str | pathlib.Path) -> dict[str, An
     -------
     dict: dictionary of metadata collected
     """
-    metadata = dict()
+    metadata: dict[str, Any] = dict()
     metadata_file_path = os.path.join(folder_path, "metadata.json")
     if not os.path.isfile(metadata_file_path):
         # some fields are required
@@ -297,7 +297,9 @@ def load_resource_metadata_file(folder_path: str | pathlib.Path) -> dict[str, An
         "ds_responsible_organisation_role"
     )
     end_date = data.get("end_date")
-    if end_date != "now":
+    if end_date == "now":
+        metadata["end_date"] = None
+    else:
         metadata["end_date"] = end_date
     metadata["file_format"] = data.get("file_format")
     metadata["format_version"] = data.get("format_version")
@@ -423,26 +425,28 @@ def parse_override_md(override_path: str | pathlib.Path | None) -> dict[str, Any
         "qa_flag",
         "hidden",
     )
-    # integers = ("popularity",)
-    # floats = ("representative_fraction",)
-    # jsons = ("description", "geo_extent",) DO NOT WANT
-    #  arrays = ("qos_tags", "related_resources_keywords",) DO NOT WANT
-    # to_be_managed_apart = ("end_date", "keywords", "licence_uids", "update_date", "type", "file_format",)
+    supported_keys_int = ("popularity",)
+    supported_keys_floats = ("representative_fraction",)
     for dataset_uid in data:
         ret_value[dataset_uid] = dict()
         dataset_md = data[dataset_uid]
         if not dataset_md:
             continue
         for key, value in dataset_md.items():
+            if value == "null":
+                ret_value[dataset_uid][key] = None
+                continue
             if key in supported_keys_bool:
                 if isinstance(value, bool):
                     ret_value[dataset_uid][key] = value  # type: ignore
                 else:
                     ret_value[dataset_uid][key]: bool = utils.str2bool(value)  # type: ignore
             elif key in supported_keys_str:
-                if value == "null":
-                    value = None
                 ret_value[dataset_uid][key] = value
+            elif key in supported_keys_int:
+                ret_value[dataset_uid][key] = int(value)
+            elif key in supported_keys_floats:
+                ret_value[dataset_uid][key] = float(value)
             else:
                 logger.warning(
                     f"unknown key '{key}' found in override file for {dataset_uid}. It will be ignored"
diff --git a/tests/data/dumped_resources7.txt b/tests/data/dumped_resources7.txt
index 438c193..44a003f 100644
--- a/tests/data/dumped_resources7.txt
+++ b/tests/data/dumped_resources7.txt
@@ -1486,7 +1486,7 @@
     {
         "resource_id": 1,
         "resource_uid": "reanalysis-era5-land",
-        "popularity": 500,
+        "popularity": 200,
         "api_enforce_constraints": false,
         "constraints": "an url",
         "form": "an url",
@@ -1523,7 +1523,7 @@
         "high_priority_terms": "ERA5 reanalysis temperature",
         "fts": "'era5':1 'reanalysi':2 'temperatur':3",
         "lineage": "Copernicus Atmospheric Monitoring Service",
-        "representative_fraction": 0.25,
+        "representative_fraction": 0.5,
         "responsible_organisation": "Org2",
         "responsible_organisation_role": "pointOfContact2",
         "responsible_organisation_website": "http://a/website.com",
diff --git a/tests/data/override2.yaml b/tests/data/override2.yaml
index a95400d..4550a4f 100644
--- a/tests/data/override2.yaml
+++ b/tests/data/override2.yaml
@@ -14,7 +14,9 @@ reanalysis-era5-land:
   format_version: null
   high_priority_terms: ERA5 reanalysis temperature
   lineage: Copernicus Atmospheric Monitoring Service
+  popularity: 200
   publication_date: 2022-06-01
+  representative_fraction: 0.5
   responsible_organisation: Org2
   responsible_organisation_role: pointOfContact2
   responsible_organisation_website: http://a/website.com
diff --git a/tests/test_40_manager.py b/tests/test_40_manager.py
index e7f6972..012c7a7 100644
--- a/tests/test_40_manager.py
+++ b/tests/test_40_manager.py
@@ -54,7 +54,9 @@ def test_parse_override_md() -> None:
             "format_version": None,
             "high_priority_terms": "ERA5 reanalysis temperature",
             "lineage": "Copernicus Atmospheric Monitoring Service",
+            "popularity": 200,
             "publication_date": "2022-06-01",
+            "representative_fraction": 0.5,
             "responsible_organisation": "Org2",
             "responsible_organisation_role": "pointOfContact2",
             "responsible_organisation_website": "http://a/website.com",