diff --git a/pronote_sync/sources/pronote/client.py b/pronote_sync/sources/pronote/client.py
index 7f5c2ab..48670b1 100644
--- a/pronote_sync/sources/pronote/client.py
+++ b/pronote_sync/sources/pronote/client.py
@@ -25,10 +25,11 @@ import requests
 
 from pronote_sync.config.settings import PronoteSettings
 from pronote_sync.errors import PronoteAuthRotationError
-from pronote_sync.models.agenda import Lesson, LessonStatus
+from pronote_sync.models.agenda import Lesson
 from pronote_sync.models.homework import Homework
 from pronote_sync.models.message import Message, MessageType
 from pronote_sync.sources.pronote.auth_state import PronoteAuthState
+from pronote_sync.sources.pronote.lessons import collapse_replaced_lessons, lesson_status
 from pronote_sync.utils.redaction import redact_exception, redact_secrets
 from pronote_sync.utils.uid import generate_deterministic_uid, normalize_pronote_uid
 
@@ -573,12 +574,12 @@ class PronoteClient:
                         teachers=tuple(lesson.teacher_names or ()),
                         rooms=tuple(lesson.classrooms or ()),
                         group=lesson.group_name,
-                        status=(LessonStatus.CANCELLED if lesson.canceled else LessonStatus.NORMAL),
+                        status=lesson_status(getattr(lesson, "status", None), lesson.canceled),
                         content=content.description if content is not None else None,
                     )
                 )
             self._persist_credentials()
-            return lessons
+            return collapse_replaced_lessons(lessons)
 
     def get_homeworks(self, start: date, end: date) -> list[Homework]:
         """Récupère les devoirs via ``pronotepy``.
diff --git a/pronote_sync/sources/pronote/ical.py b/pronote_sync/sources/pronote/ical.py
index 4e7ecc3..4a279e5 100644
--- a/pronote_sync/sources/pronote/ical.py
+++ b/pronote_sync/sources/pronote/ical.py
@@ -35,6 +35,7 @@ from ...models.agenda import (
 from ...models.homework import Homework
 from ...utils.redaction import redact_exception, redact_url
 from ...utils.uid import generate_deterministic_uid, normalize_pronote_uid
+from .lessons import collapse_replaced_lessons
 
 _HEADER_LABEL_PATTERN = re.compile(
     r"(?P<label>Mati(?:ère|ere)|Professeur(?:s|\(s\))?|Salle(?:s|\(s\))?"
@@ -186,11 +187,12 @@ def parse_header(header: str) -> HeaderInfo:
         "group": None,
         "class_part": None,
     }
-    matches = list(_HEADER_LABEL_PATTERN.finditer(header))
+    header_text = _strip_html(header)
+    matches = list(_HEADER_LABEL_PATTERN.finditer(header_text))
     for index, match in enumerate(matches):
         value_start = match.end()
-        value_end = matches[index + 1].start() if index + 1 < len(matches) else len(header)
-        value = unescape(header[value_start:value_end].strip())
+        value_end = matches[index + 1].start() if index + 1 < len(matches) else len(header_text)
+        value = unescape(header_text[value_start:value_end].strip())
         label = _normalize_label(match.group("label")).replace("(s)", "s")
         if label == "matiere":
             info["subject"] = value
@@ -566,4 +568,4 @@ def parse_ical(raw_ical: str) -> tuple[list[Lesson], list[Homework], list[School
             )
         )
 
-    return lessons, homeworks, school_events
+    return collapse_replaced_lessons(lessons), homeworks, school_events
diff --git a/pronote_sync/sources/pronote/lessons.py b/pronote_sync/sources/pronote/lessons.py
new file mode 100644
index 0000000..a86fedd
--- /dev/null
+++ b/pronote_sync/sources/pronote/lessons.py
@@ -0,0 +1,79 @@
+"""Règles communes de statut et de consolidation des cours Pronote."""
+
+from __future__ import annotations
+
+import unicodedata
+from collections import defaultdict
+
+from ...models.agenda import Lesson, LessonStatus
+
+
+def _normalize_status(value: str) -> str:
+    """Normalise un statut Pronote pour une comparaison tolérante.
+
+    :param value: Statut brut fourni par Pronote.
+    :return: Statut minuscule sans accents.
+    :rtype: str
+    """
+    decomposed = unicodedata.normalize("NFKD", value)
+    without_accents = "".join(char for char in decomposed if not unicodedata.combining(char))
+    return " ".join(without_accents.casefold().split())
+
+
+def lesson_status(raw_status: object, canceled: bool = False) -> LessonStatus:
+    """Convertit le statut Pronote en statut métier canonique.
+
+    L'indicateur d'annulation et les libellés annulé sont prioritaires sur un
+    éventuel libellé de déplacement. Les libellés inconnus restent normaux.
+
+    :param raw_status: Valeur du champ ``Lesson.status`` de pronotepy.
+    :param canceled: Indicateur ``Lesson.canceled`` de pronotepy.
+    :return: Statut métier canonique.
+    :rtype: LessonStatus
+    """
+    status = _normalize_status(raw_status) if isinstance(raw_status, str) else ""
+    if canceled or "annul" in status:
+        return LessonStatus.CANCELLED
+    if any(token in status for token in ("deplac", "changement de salle", "modifi")):
+        return LessonStatus.MOVED
+    return LessonStatus.NORMAL
+
+
+def collapse_replaced_lessons(lessons: list[Lesson]) -> list[Lesson]:
+    """Supprime l'ancien exemplaire annulé lorsqu'un cours déplacé est présent.
+
+    Deux cours sont considérés comme les exemplaires d'une même modification
+    lorsqu'ils partagent les dates, la matière, les enseignants et le groupe.
+    Une annulation isolée est toujours conservée ; seule l'annulation associée
+    à un exemplaire ``MOVED`` est retirée.
+
+    :param lessons: Cours issus d'une source Pronote.
+    :return: Cours consolidés dans leur ordre d'origine.
+    :rtype: list[Lesson]
+    """
+    grouped: dict[tuple[object, ...], list[Lesson]] = defaultdict(list)
+    for lesson in lessons:
+        key = (
+            lesson.start,
+            lesson.end,
+            lesson.subject.casefold(),
+            tuple(teacher.casefold() for teacher in lesson.teachers),
+            (lesson.group or "").casefold(),
+        )
+        grouped[key].append(lesson)
+
+    result: list[Lesson] = []
+    for lesson in lessons:
+        key = (
+            lesson.start,
+            lesson.end,
+            lesson.subject.casefold(),
+            tuple(teacher.casefold() for teacher in lesson.teachers),
+            (lesson.group or "").casefold(),
+        )
+        siblings = grouped[key]
+        has_moved = any(sibling.status == LessonStatus.MOVED for sibling in siblings)
+        if has_moved and lesson.status == LessonStatus.CANCELLED:
+            continue
+        result.append(lesson)
+    return result
diff --git a/tests/unit/test_ical.py b/tests/unit/test_ical.py
index 9a91eeb..37e7c28 100644
--- a/tests/unit/test_ical.py
+++ b/tests/unit/test_ical.py
@@ -444,6 +444,39 @@ def test_parse_anonymized_variants_fixture() -> None:
     assert {homework.subject for homework in homeworks} == {"Mathématiques", "Sciences"}
 
 
+def test_parse_ical_removes_old_replaced_lesson() -> None:
+    """Un ancien cours annulé est retiré lorsqu'un cours déplacé le remplace.
+
+    :return: None
+    """
+    raw_ical = """BEGIN:VCALENDAR
+VERSION:2.0
+BEGIN:VEVENT
+UID:old
+DTSTART:20260911T080000Z
+DTEND:20260911T090000Z
+SUMMARY:Mathématiques
+CATEGORIES:Cours - Cours annulé
+STATUS:CANCELLED
+DESCRIPTION:<div>Matière : Mathématiques Professeur : Enseignant A Salle : 101</div>
+END:VEVENT
+BEGIN:VEVENT
+UID:new
+DTSTART:20260911T080000Z
+DTEND:20260911T090000Z
+SUMMARY:Mathématiques
+CATEGORIES:Cours - Changement de salle
+DESCRIPTION:<div>Matière : Mathématiques Professeur : Enseignant A Salle : 204</div>
+END:VEVENT
+END:VCALENDAR"""
+
+    lessons, _, _ = parse_ical(raw_ical)
+
+    assert len(lessons) == 1
+    assert lessons[0].status == LessonStatus.MOVED
+    assert lessons[0].rooms == ("204",)
+
+
 def test_collect_homeworks_sorted() -> None:
     """Les résultats sont triés par (subject.lower(), text.lower()).
 
diff --git a/tests/unit/test_pronote_client.py b/tests/unit/test_pronote_client.py
index 74d2701..cdfa312 100644
--- a/tests/unit/test_pronote_client.py
+++ b/tests/unit/test_pronote_client.py
@@ -233,6 +233,24 @@ def test_get_lessons_success(
     assert lesson.content == "Lesson content"
 
 
+def test_get_lessons_maps_moved_status(
+    mocker: pytest_mock.MockerFixture, pronote_settings: PronoteSettings
+) -> None:
+    """Mappe le statut ``Changement de salle`` de pronotepy vers ``MOVED``.
+
+    :param mocker: Fixture pytest-mock pour le mocking.
+    :param pronote_settings: Paramètres Pronote valides.
+    :return: None
+    """
+    mock_client = _make_lessons_mock_client(mocker)
+    mock_client.lessons.return_value[0].status = "Changement de salle"
+    mocker.patch.object(PronoteClient, "_connect", return_value=mock_client)
+
+    lessons = PronoteClient(pronote_settings).get_lessons(date(2024, 9, 1), date(2024, 9, 30))
+
+    assert lessons[0].status == LessonStatus.MOVED
+
+
 def test_get_homeworks_success(
     mocker: pytest_mock.MockerFixture, pronote_settings: PronoteSettings
 ) -> None:
diff --git a/tests/unit/test_pronote_lessons.py b/tests/unit/test_pronote_lessons.py
new file mode 100644
index 0000000..666dbb1
--- /dev/null
+++ b/tests/unit/test_pronote_lessons.py
@@ -0,0 +1,77 @@
+"""Tests des règles communes de statut et de consolidation des cours."""
+
+from __future__ import annotations
+
+from datetime import datetime
+
+import pytest
+
+from pronote_sync.models.agenda import Lesson, LessonStatus
+from pronote_sync.sources.pronote.lessons import collapse_replaced_lessons, lesson_status
+
+
+def _lesson(status: LessonStatus, room: str) -> Lesson:
+    """Construit un cours minimal pour les tests de consolidation.
+
+    :param status: Statut métier du cours.
+    :param room: Salle du cours.
+    :return: Cours de test.
+    :rtype: Lesson
+    """
+    return Lesson(
+        id=f"lesson-{room}",
+        start=datetime(2026, 9, 11, 8, 0),
+        end=datetime(2026, 9, 11, 9, 0),
+        subject="Mathématiques",
+        teachers=("Enseignant A",),
+        rooms=(room,),
+        group="Classe entière",
+        status=status,
+        content=None,
+    )
+
+
+@pytest.mark.parametrize(
+    ("raw_status", "canceled", "expected"),
+    [
+        ("Changement de salle", False, LessonStatus.MOVED),
+        ("Cours déplacé", False, LessonStatus.MOVED),
+        ("Cours annulé", False, LessonStatus.CANCELLED),
+        (None, True, LessonStatus.CANCELLED),
+        ("Statut inconnu", False, LessonStatus.NORMAL),
+    ],
+)
+def test_lesson_status_maps_pronotepy_variants(
+    raw_status: object, canceled: bool, expected: LessonStatus
+) -> None:
+    """Convertit les statuts Pronote connus sans interpréter les inconnus.
+
+    :param raw_status: Statut brut simulé.
+    :param canceled: Indicateur d'annulation simulé.
+    :param expected: Statut métier attendu.
+    :return: None
+    """
+    assert lesson_status(raw_status, canceled) == expected
+
+
+def test_collapse_replaced_lessons_keeps_effective_lesson() -> None:
+    """Retire l'ancien exemplaire annulé d'un changement de salle.
+
+    :return: None
+    """
+    cancelled = _lesson(LessonStatus.CANCELLED, "101")
+    moved = _lesson(LessonStatus.MOVED, "204")
+
+    result = collapse_replaced_lessons([cancelled, moved])
+
+    assert result == [moved]
+
+
+def test_collapse_replaced_lessons_keeps_real_cancellation() -> None:
+    """Conserve une annulation lorsqu'aucun cours déplacé ne la remplace.
+
+    :return: None
+    """
+    cancelled = _lesson(LessonStatus.CANCELLED, "101")
+
+    assert collapse_replaced_lessons([cancelled]) == [cancelled]