diff --git a/src/routes/settings.import.tsx b/src/routes/settings.import.tsx
index 451ce41..535d3d1 100644
--- a/src/routes/settings.import.tsx
+++ b/src/routes/settings.import.tsx
@@ -578,6 +578,15 @@ function ImportPage() {
       const transformed = cfg.transform ? cfg.transform(row, ctx) : row;
       if (!transformed) { skipped++; continue; }
 
+      // archived → archived_at (only on tables that support it)
+      if ("_archived" in transformed) {
+        const flag = transformed._archived;
+        delete transformed._archived;
+        if (["clients", "cases", "contacts", "homeowners"].includes(cfg.table)) {
+          transformed.archived_at = toBool(flag) ? new Date().toISOString() : null;
+        }
+      }
+
       // required check
       const missing = cfg.required.find((k) => !transformed[k] && transformed[k] !== 0);
       if (missing) { skipped++; continue; }