diff --git a/backend/src/lib/workforce.js b/backend/src/lib/workforce.js
index 1ca4a4e..be8fb2d 100644
--- a/backend/src/lib/workforce.js
+++ b/backend/src/lib/workforce.js
@@ -180,16 +180,17 @@ export async function syncActuals(from, to) {
     }
   }
 
+  // syncActuals recomputes the entire [from, to] range from the API on every call, so any
+  // shift that vanished or moved department since the last sync (edited, deleted, reassigned)
+  // must have its old row cleared here — otherwise it lingers as a stale orphan (department
+  // totals get overwritten to the new figure, but the old per-employee detail row never does).
+  await pool.query(`DELETE FROM wage_actuals WHERE date >= $1 AND date <= $2`, [from, to])
+  await pool.query(`DELETE FROM wage_actuals_detail WHERE date >= $1 AND date <= $2`, [from, to])
+
   for (const row of Object.values(byDateDept)) {
     await pool.query(
       `INSERT INTO wage_actuals (date, department_id, department_name, base_cost, total_cost, shift_count, cached_at)
-       VALUES ($1, $2, $3, $4, $5, $6, NOW())
-       ON CONFLICT (date, department_id) DO UPDATE SET
-         department_name = EXCLUDED.department_name,
-         base_cost       = EXCLUDED.base_cost,
-         total_cost      = EXCLUDED.total_cost,
-         shift_count     = EXCLUDED.shift_count,
-         cached_at       = NOW()`,
+       VALUES ($1, $2, $3, $4, $5, $6, NOW())`,
       [row.date, row.department_id, row.department_name,
        row.base_cost.toFixed(2), row.total_cost.toFixed(2), row.shift_count]
     )
@@ -198,13 +199,7 @@ export async function syncActuals(from, to) {
   for (const row of Object.values(byDateDeptEmp)) {
     await pool.query(
       `INSERT INTO wage_actuals_detail (date, department_id, employee_id, employee_name, base_cost, total_cost, shift_count, cached_at)
-       VALUES ($1, $2, $3, $4, $5, $6, $7, NOW())
-       ON CONFLICT (date, department_id, employee_id) DO UPDATE SET
-         employee_name = EXCLUDED.employee_name,
-         base_cost     = EXCLUDED.base_cost,
-         total_cost    = EXCLUDED.total_cost,
-         shift_count   = EXCLUDED.shift_count,
-         cached_at     = NOW()`,
+       VALUES ($1, $2, $3, $4, $5, $6, $7, NOW())`,
       [row.date, row.department_id, row.employee_id, row.employee_name,
        row.base_cost.toFixed(2), row.total_cost.toFixed(2), row.shift_count]
     )