diff --git a/.manus/db/db-query-1764099145203.json b/.manus/db/db-query-1764099145203.json
new file mode 100644
index 0000000..06a35c0
--- /dev/null
+++ b/.manus/db/db-query-1764099145203.json
@@ -0,0 +1,58 @@
+{
+  "query": "SHOW COLUMNS FROM datesFormation;",
+  "command": "mysql --batch --raw --column-names --default-character-set=utf8mb4 --host gateway02.us-east-1.prod.aws.tidbcloud.com --port 4000 --user 4CrrYuB5tme73Qo.root --database 7PAT67UmWoxv8vwp8Bbcv6 --execute SHOW COLUMNS FROM datesFormation;",
+  "rows": [
+    {
+      "Field": "id",
+      "Type": "int(11)",
+      "Null": "NO",
+      "Key": "PRI",
+      "Default": "NULL",
+      "Extra": "auto_increment"
+    },
+    {
+      "Field": "sequenceId",
+      "Type": "int(11)",
+      "Null": "NO",
+      "Key": "",
+      "Default": "NULL",
+      "Extra": ""
+    },
+    {
+      "Field": "dateDebut",
+      "Type": "datetime",
+      "Null": "NO",
+      "Key": "",
+      "Default": "NULL",
+      "Extra": ""
+    },
+    {
+      "Field": "dateFin",
+      "Type": "datetime",
+      "Null": "NO",
+      "Key": "",
+      "Default": "NULL",
+      "Extra": ""
+    },
+    {
+      "Field": "ordre",
+      "Type": "int(11)",
+      "Null": "NO",
+      "Key": "",
+      "Default": "NULL",
+      "Extra": ""
+    },
+    {
+      "Field": "createdAt",
+      "Type": "timestamp",
+      "Null": "NO",
+      "Key": "",
+      "Default": "CURRENT_TIMESTAMP",
+      "Extra": ""
+    }
+  ],
+  "messages": [],
+  "stdout": "Field\tType\tNull\tKey\tDefault\tExtra\nid\tint(11)\tNO\tPRI\tNULL\tauto_increment\nsequenceId\tint(11)\tNO\t\tNULL\t\ndateDebut\tdatetime\tNO\t\tNULL\t\ndateFin\tdatetime\tNO\t\tNULL\t\nordre\tint(11)\tNO\t\tNULL\t\ncreatedAt\ttimestamp\tNO\t\tCURRENT_TIMESTAMP\t\n",
+  "stderr": "",
+  "execution_time_ms": 63
+}
\ No newline at end of file
diff --git a/server/importExcel.ts b/server/importExcel.ts
index 84300d6..270fa15 100644
--- a/server/importExcel.ts
+++ b/server/importExcel.ts
@@ -196,13 +196,13 @@ export async function importToDatabase(
     for (const formation of formations) {
       try {
         console.log(`[Import] Création formation: ${formation.nom}`);
-        const result = await db.insert(formationsTable).values({
+        const [result] = await db.insert(formationsTable).values({
           nom: formation.nom,
           description: formation.description,
           lienUnique: generateUniqueLien(),
-        });
+        }).$returningId();
         
-        const formationId = Number(result.insertId);
+        const formationId = result.id;
         formationIdMap.set(formation.nom.toLowerCase(), formationId);
         console.log(`[Import] Formation créée avec ID ${formationId}, ajoutée à la map avec clé: "${formation.nom.toLowerCase()}"`);
         formationsCreated++;
@@ -238,7 +238,7 @@ export async function importToDatabase(
           continue;
         }
 
-        const result = await db.insert(sequencesTable).values({
+        const [result] = await db.insert(sequencesTable).values({
           formationId,
           nom: sequence.nom,
           lieu: sequence.lieu,
@@ -246,16 +246,18 @@ export async function importToDatabase(
           capaciteMax: sequence.capaciteMax,
           dateBlocage: new Date(sequence.dateBlocage),
           statut: sequence.statut,
-        });
+        }).$returningId();
 
-        const sequenceId = Number(result.insertId);
+        const sequenceId = result.id;
 
         // Insérer les dates de formation
-        for (const date of sequence.dates.slice(0, 4)) {
+        for (let i = 0; i < Math.min(sequence.dates.length, 4); i++) {
+          const date = sequence.dates[i];
           await db.insert(datesFormation).values({
             sequenceId,
             dateDebut: new Date(date.debut),
             dateFin: new Date(date.fin),
+            ordre: i + 1,
           });
         }
 
diff --git a/test-import-direct.ts b/test-import-direct.ts
new file mode 100644
index 0000000..c64c6f9
--- /dev/null
+++ b/test-import-direct.ts
@@ -0,0 +1,46 @@
+import { parseExcelFile, importToDatabase } from './server/importExcel';
+import { readFileSync } from 'fs';
+
+async function testImport() {
+  console.log('=== TEST IMPORT DIRECT ===\n');
+  
+  const buffer = readFileSync('/home/ubuntu/upload/template_import_formations_test.xlsx');
+  const { formations, sequences } = parseExcelFile(buffer);
+  
+  console.log(`Formations parsées: ${formations.length}`);
+  formations.forEach((f, i) => {
+    console.log(`  ${i}: "${f.nom}" - "${f.description}" - public: "${f.publicCible}"`);
+  });
+  
+  console.log(`\nSéquences parsées: ${sequences.length}`);
+  sequences.forEach((s, i) => {
+    console.log(`  ${i}: formation="${s.formationNom}", nom="${s.nom}"`);
+  });
+  
+  console.log('\n=== DÉBUT IMPORT EN BASE ===\n');
+  const result = await importToDatabase(formations, sequences);
+  
+  console.log('\n=== RÉSULTAT ===');
+  console.log(`Success: ${result.success}`);
+  console.log(`Formations créées: ${result.formationsCreated}`);
+  console.log(`Séquences créées: ${result.sequencesCreated}`);
+  
+  if (result.errors.length > 0) {
+    console.log('\nErreurs:');
+    result.errors.forEach(e => console.log(`  - ${e}`));
+  }
+  
+  if (result.warnings.length > 0) {
+    console.log('\nAvertissements:');
+    result.warnings.forEach(w => console.log(`  - ${w}`));
+  }
+}
+
+testImport().then(() => {
+  console.log('\n=== TEST TERMINÉ ===');
+  process.exit(0);
+}).catch(err => {
+  console.error('\n=== ERREUR FATALE ===');
+  console.error(err);
+  process.exit(1);
+});
diff --git a/todo.md b/todo.md
index f2a05f2..8ac3b97 100644
--- a/todo.md
+++ b/todo.md
@@ -677,3 +677,10 @@
 - [x] Vérifier le schéma de la table formations en base de données (publicCible n'existe pas dans formations)
 - [x] Corriger le code d'import (retiré publicCible de l'insertion formations)
 - [x] Tester l'import après correction
+
+## Bug import Excel - Problème persistant "Formation non trouvée"
+
+- [x] Analyser les logs serveur pour voir si la formation est réellement créée (ID = NaN)
+- [x] Vérifier si l'erreur vient de la création ou de la recherche dans la map (problème de récupération ID)
+- [x] Corriger le problème identifié (utilisation de $returningId() pour formations et séquences, ajout ordre pour dates)
+- [x] Tester l'import et valider que tout fonctionne