diff --git a/src/routes/settings.import.tsx b/src/routes/settings.import.tsx
index d0af9ae..baa04b7 100644
--- a/src/routes/settings.import.tsx
+++ b/src/routes/settings.import.tsx
@@ -853,6 +853,11 @@ function ImportPage() {
       "external_id",
       "created_by",
     ]);
+    // Allow internal columns we set in transforms but never read from CSV.
+    if (cfg.table === "time_entries" || cfg.table === "expenses") {
+      allowedTargets.add("billed");
+      allowedTargets.add("invoice_id");
+    }
     // Build header → db column map (only keep known targets)
     const headerMap: Record<string, string> = {};
     const unknownHeaders: string[] = [];