diff --git a/scripts/migration/fix_dates.py b/scripts/migration/fix_dates.py
new file mode 100644
index 0000000..8358cf8
--- /dev/null
+++ b/scripts/migration/fix_dates.py
@@ -0,0 +1,118 @@
+#!/usr/bin/env python3
+"""
+Fix creation/modified dates on all migrated documents.
+Sets creation = original legacy date (converted from unix timestamp).
+Fixes Issues, Sales Invoices, Customers, Communications.
+"""
+import pymysql
+import psycopg2
+from datetime import datetime, timezone
+
+LEGACY = {"host": "10.100.80.100", "user": "facturation", "password": "VD67owoj",
+          "database": "gestionclient", "connect_timeout": 30, "read_timeout": 600}
+PG = {"host": "db", "port": 5432, "user": "postgres", "password": "123",
+      "dbname": "_eb65bdc0c4b1b2d6"}
+
+def ts_to_dt(unix_ts):
+    if not unix_ts or unix_ts <= 0:
+        return None
+    try:
+        return datetime.fromtimestamp(int(unix_ts), tz=timezone.utc).strftime("%Y-%m-%d %H:%M:%S")
+    except:
+        return None
+
+def log(msg):
+    print(msg, flush=True)
+
+def main():
+    log("=== Fix Creation/Modified Dates ===")
+
+    mc = pymysql.connect(**LEGACY)
+    cur = mc.cursor(pymysql.cursors.DictCursor)
+
+    # 1. Tickets → Issues
+    log("Loading ticket dates...")
+    cur.execute("SELECT id, date_create, last_update, date_closed FROM ticket ORDER BY id")
+    ticket_dates = {r["id"]: r for r in cur.fetchall()}
+
+    # 2. Invoices → Sales Invoices
+    log("Loading invoice dates...")
+    cur.execute("SELECT id, date_orig FROM invoice WHERE billing_status = 1 ORDER BY id")
+    inv_dates = {r["id"]: r["date_orig"] for r in cur.fetchall()}
+
+    # 3. Accounts → Customers
+    log("Loading account dates...")
+    cur.execute("SELECT id, date_orig, date_last FROM account ORDER BY id")
+    acct_dates = {r["id"]: r for r in cur.fetchall()}
+
+    mc.close()
+    log("  Loaded {} ticket, {} invoice, {} account dates".format(
+        len(ticket_dates), len(inv_dates), len(acct_dates)))
+
+    pg = psycopg2.connect(**PG)
+    pgc = pg.cursor()
+
+    # Fix Issues
+    log("")
+    log("--- Fixing Issue dates ---")
+    pgc.execute('SELECT name, legacy_ticket_id FROM "tabIssue" WHERE legacy_ticket_id > 0')
+    issues = pgc.fetchall()
+    fixed_issues = 0
+    for name, tid in issues:
+        t = ticket_dates.get(tid)
+        if not t:
+            continue
+        created = ts_to_dt(t.get("date_create"))
+        modified = ts_to_dt(t.get("last_update")) or created
+        if created:
+            pgc.execute('UPDATE "tabIssue" SET creation = %s, modified = %s WHERE name = %s',
+                         (created, modified or created, name))
+            fixed_issues += 1
+    pg.commit()
+    log("  {} Issues dates fixed".format(fixed_issues))
+
+    # Fix Sales Invoices
+    log("")
+    log("--- Fixing Sales Invoice dates ---")
+    pgc.execute('SELECT name, legacy_invoice_id FROM "tabSales Invoice" WHERE legacy_invoice_id > 0')
+    sinvs = pgc.fetchall()
+    fixed_inv = 0
+    for name, inv_id in sinvs:
+        date_orig = inv_dates.get(inv_id)
+        created = ts_to_dt(date_orig)
+        if created:
+            pgc.execute('UPDATE "tabSales Invoice" SET creation = %s, modified = %s WHERE name = %s',
+                         (created, created, name))
+            fixed_inv += 1
+    pg.commit()
+    log("  {} Sales Invoice dates fixed".format(fixed_inv))
+
+    # Fix Customers
+    log("")
+    log("--- Fixing Customer dates ---")
+    pgc.execute('SELECT name, legacy_account_id FROM "tabCustomer" WHERE legacy_account_id > 0')
+    custs = pgc.fetchall()
+    fixed_cust = 0
+    for name, aid in custs:
+        a = acct_dates.get(aid)
+        if not a:
+            continue
+        created = ts_to_dt(a.get("date_orig"))
+        modified = ts_to_dt(a.get("date_last")) or created
+        if created:
+            pgc.execute('UPDATE "tabCustomer" SET creation = %s, modified = %s WHERE name = %s',
+                         (created, modified or created, name))
+            fixed_cust += 1
+    pg.commit()
+    pg.close()
+    log("  {} Customer dates fixed".format(fixed_cust))
+
+    log("")
+    log("=" * 60)
+    log("Issues:    {} dates fixed".format(fixed_issues))
+    log("Invoices:  {} dates fixed".format(fixed_inv))
+    log("Customers: {} dates fixed".format(fixed_cust))
+    log("=" * 60)
+
+if __name__ == "__main__":
+    main()