diff --git a/release_notes_generator/chapters/service_chapters.py b/release_notes_generator/chapters/service_chapters.py
index 5719f553..57bee16e 100644
--- a/release_notes_generator/chapters/service_chapters.py
+++ b/release_notes_generator/chapters/service_chapters.py
@@ -18,15 +18,18 @@
 This module contains the ServiceChapters class which is responsible for representing the service chapters in the release
  notes.
 """
+import logging
 from typing import Optional, cast
 
 from release_notes_generator.action_inputs import ActionInputs
 from release_notes_generator.chapters.base_chapters import BaseChapters
 from release_notes_generator.model.chapter import Chapter
 from release_notes_generator.model.record.commit_record import CommitRecord
+from release_notes_generator.model.record.hierarchy_issue_record import HierarchyIssueRecord
 from release_notes_generator.model.record.issue_record import IssueRecord
 from release_notes_generator.model.record.pull_request_record import PullRequestRecord
 from release_notes_generator.model.record.record import Record
+from release_notes_generator.model.record.sub_issue_record import SubIssueRecord
 from release_notes_generator.utils.constants import (
     CLOSED_ISSUES_WITHOUT_PULL_REQUESTS,
     CLOSED_ISSUES_WITHOUT_USER_DEFINED_LABELS,
@@ -38,6 +41,8 @@
 )
 from release_notes_generator.utils.enums import DuplicityScopeEnum
 
+logger = logging.getLogger(__name__)
+
 
 # pylint: disable=too-many-instance-attributes
 class ServiceChapters(BaseChapters):
@@ -121,20 +126,23 @@ def populate(self, records: dict[str, Record]) -> None:
 
             # other edge case situations
             else:
-                if (
-                    record.is_open
-                    and isinstance(record, IssueRecord)
-                    and cast(IssueRecord, record).pull_requests_count() == 0
-                ):
-                    # no change increment delivered
-                    pass
-                elif (
-                    record.is_open
-                    and isinstance(record, IssueRecord)
-                    and cast(IssueRecord, record).pull_requests_count() > 0
-                ):
-                    self.chapters[MERGED_PRS_LINKED_TO_NOT_CLOSED_ISSUES].add_row(record_id, record.to_chapter_row())
-                    self.used_record_numbers.append(record_id)
+                pr_count = cast(IssueRecord, record).pull_requests_count()
+                is_issue_like = isinstance(record, (IssueRecord, SubIssueRecord))
+                is_hierarchy = isinstance(record, HierarchyIssueRecord)
+
+                if record.is_open:
+                    if is_hierarchy and record.is_present_in_chapters:
+                        logger.debug("Skipping open HierarchyIssueRecord %s (pr_count=%d)", record_id, pr_count)
+                    elif is_issue_like and pr_count > 0:
+                        # Open issue/sub-issue with linked PRs → add to the specific chapter
+                        self.chapters[MERGED_PRS_LINKED_TO_NOT_CLOSED_ISSUES].add_row(
+                            record_id, record.to_chapter_row()
+                        )
+                        logger.debug("Linked PRs for open issue %s; added to chapter.", record_id)
+                        self.used_record_numbers.append(record_id)
+                    else:
+                        # Open issue/sub-issue with no PRs → explicitly do nothing (keeps original behavior)
+                        pass
                 else:
                     if record_id not in self.used_record_numbers:
                         self.chapters[OTHERS_NO_TOPIC].add_row(record_id, record.to_chapter_row())
diff --git a/tests/release_notes/builder/test_release_notes_builder.py b/tests/release_notes/builder/test_release_notes_builder.py
index f4e89807..76ae1498 100644
--- a/tests/release_notes/builder/test_release_notes_builder.py
+++ b/tests/release_notes/builder/test_release_notes_builder.py
@@ -269,36 +269,7 @@
 All closed PRs are linked to issues.
 
 ### Merged PRs Linked to 'Not Closed' Issue ⚠️
-- 🔔 None: _HI302 open_ #302
-  - _Release Notes_:
-    - Hierarchy level release note
-  - 🔔 N/A: #451 _SI451 closed_ developed by @pr_author_101, @user in #150
-    - Hierarchy level release note
-    - Fixed bug
-    - Improved performance
-    + More nice code
-      * Awesome architecture
-- 🔔 None: _HI303 open_ #303
-  - _Release Notes_:
-    - Hierarchy level release note
-  - 🔔 N/A: #452 _SI452 closed_ developed by @author, @pr_author_101, @user in #151
-    - Hierarchy level release note
-    - Fixed bug
-    - Improved performance
-    + More nice code
-      * Awesome architecture
-- 🔔 None: _HI304 open_ #304
-  - _Release Notes_:
-    - Hierarchy level release note
-  - 🔔 None: _HI350 open_ #350
-    - _Release Notes_:
-      - Sub-hierarchy level release note
-    - 🔔 N/A: #453 _SI453 closed_ developed by @author, @pr_author_101, @user in #152
-      - Hierarchy level release note
-      - Fixed bug
-      - Improved performance
-      + More nice code
-        * Awesome architecture
+All merged PRs are linked to Closed issues.
 
 ### Direct commits ⚠️
 - Commit: merge_c... - Direct commit example
@@ -362,36 +333,7 @@
     * Awesome architecture
 
 ### Merged PRs Linked to 'Not Closed' Issue ⚠️
-- 🔔 Epic: _HI302 open_ #302
-  - _Release Notes_:
-    - Hierarchy level release note
-  - 🔔 Task: #451 _SI451 closed_ developed by @pr_author_101, @user in #150
-    - Hierarchy level release note
-    - Fixed bug
-    - Improved performance
-    + More nice code
-      * Awesome architecture
-- 🔔 Epic: _HI303 open_ #303
-  - _Release Notes_:
-    - Hierarchy level release note
-  - 🔔 Task: #452 _SI452 closed_ developed by @author, @pr_author_101, @user in #151
-    - Hierarchy level release note
-    - Fixed bug
-    - Improved performance
-    + More nice code
-      * Awesome architecture
-- 🔔 Epic: _HI304 open_ #304
-  - _Release Notes_:
-    - Hierarchy level release note
-  - 🔔 Feature: _HI350 open_ #350
-    - _Release Notes_:
-      - Sub-hierarchy level release note
-    - 🔔 Task: #453 _SI453 closed_ developed by @author, @pr_author_101, @user in #152
-      - Hierarchy level release note
-      - Fixed bug
-      - Improved performance
-      + More nice code
-        * Awesome architecture
+All merged PRs are linked to Closed issues.
 
 ### Direct commits ⚠️
 - Commit: merge_c... - Direct commit example
@@ -458,36 +400,7 @@
 All closed PRs are linked to issues.
 
 ### Merged PRs Linked to 'Not Closed' Issue ⚠️
-- 🔔 Epic: _HI302 open_ #302
-  - _Release Notes_:
-    - Hierarchy level release note
-  - 🔔 Task: #451 _SI451 closed_ developed by @pr_author_101, @user in #150
-    - Hierarchy level release note
-    - Fixed bug
-    - Improved performance
-    + More nice code
-      * Awesome architecture
-- 🔔 Epic: _HI303 open_ #303
-  - _Release Notes_:
-    - Hierarchy level release note
-  - 🔔 Task: #452 _SI452 closed_ developed by @author, @pr_author_101, @user in #151
-    - Hierarchy level release note
-    - Fixed bug
-    - Improved performance
-    + More nice code
-      * Awesome architecture
-- 🔔 Epic: _HI304 open_ #304
-  - _Release Notes_:
-    - Hierarchy level release note
-  - 🔔 Feature: _HI350 open_ #350
-    - _Release Notes_:
-      - Sub-hierarchy level release note
-    - 🔔 Task: #453 _SI453 closed_ developed by @author, @pr_author_101, @user in #152
-      - Hierarchy level release note
-      - Fixed bug
-      - Improved performance
-      + More nice code
-        * Awesome architecture
+All merged PRs are linked to Closed issues.
 
 ### Direct commits ⚠️
 - Commit: merge_c... - Direct commit example