diff --git a/arho_feature_template/core/plan_manager.py b/arho_feature_template/core/plan_manager.py
index e6aec10..2cd1b94 100644
--- a/arho_feature_template/core/plan_manager.py
+++ b/arho_feature_template/core/plan_manager.py
@@ -2,6 +2,7 @@
 
 import json
 import logging
+from collections import defaultdict
 from typing import TYPE_CHECKING
 
 from qgis.core import QgsProject, QgsVectorLayer, QgsWkbTypes
@@ -439,15 +440,21 @@ def unload(self):
 
 
 def regulation_group_library_from_active_plan() -> RegulationGroupLibrary:
-    category_features = list(PlanRegulationGroupTypeLayer.get_features())
-    category_id_to_name: dict[str, str] = {category["id"]: category["name"][LANGUAGE] for category in category_features}
-    category_regulation_group_map: dict[str, list[QgsFeature]] = {
-        feature["name"][LANGUAGE]: [] for feature in category_features
+    id_of_general_regulation_group_type = PlanRegulationGroupTypeLayer.get_attribute_value_by_another_attribute_value(
+        "id", "value", "generalRegulations"
+    )
+    category_id_to_name: dict[str, str] = {
+        category["id"]: category["name"][LANGUAGE] for category in PlanRegulationGroupTypeLayer.get_features()
     }
 
+    regulation_groups_by_category = defaultdict(list)
     for feat in RegulationGroupLayer.get_features():
-        name = category_id_to_name[feat["type_of_plan_regulation_group_id"]]
-        category_regulation_group_map[name].append(feat)
+        if feat["type_of_plan_regulation_group_id"] == id_of_general_regulation_group_type:
+            # Exclude general regulations from the library
+            continue
+        category_name = category_id_to_name[feat["type_of_plan_regulation_group_id"]]
+        regulation_groups_by_category[category_name].append(feat)
+
     return RegulationGroupLibrary(
         name="Käytössä olevat kaavamääräysryhmät",
         version=None,
@@ -456,11 +463,9 @@ def regulation_group_library_from_active_plan() -> RegulationGroupLibrary:
             RegulationGroupCategory(
                 category_code=None,
                 name=category_name,
-                regulation_groups=[
-                    RegulationGroupLayer.model_from_feature(feat) for feat in category_regulation_groups
-                ],
+                regulation_groups=[RegulationGroupLayer.model_from_feature(feat) for feat in regulation_groups],
             )
-            for category_name, category_regulation_groups in category_regulation_group_map.items()
+            for category_name, regulation_groups in regulation_groups_by_category.items()
         ],
     )
 
diff --git a/arho_feature_template/project/layers/code_layers.py b/arho_feature_template/project/layers/code_layers.py
index 8a8c339..7bb3e65 100644
--- a/arho_feature_template/project/layers/code_layers.py
+++ b/arho_feature_template/project/layers/code_layers.py
@@ -68,8 +68,10 @@ def get_id_by_feature_layer_name(cls, layer_name: str) -> str | None:
         regulation_group_type = cls.LAYER_NAME_TO_REGULATION_GROUP_TYPE_MAP.get(layer_name)
         if not regulation_group_type:
             raise LayerNameNotFoundError(layer_name)
-        attribute_value = cls.get_attribute_value_by_another_attribute_value("id", "value", regulation_group_type)
-        return cast(str, attribute_value) if attribute_value else attribute_value
+        regulation_type_id = cls.get_attribute_value_by_another_attribute_value("id", "value", regulation_group_type)
+        if regulation_type_id:
+            return cast(str, regulation_type_id)
+        return None
 
 
 class PlanRegulationTypeLayer(AbstractCodeLayer):