diff --git a/src/routes/settings.import.tsx b/src/routes/settings.import.tsx
index 6a3030a..11dad04 100644
--- a/src/routes/settings.import.tsx
+++ b/src/routes/settings.import.tsx
@@ -438,7 +438,7 @@ const IMPORTERS: ImporterConfig[] = [
   {
     key: "expenses",
     label: "Expenses → Expenses",
-    description: "Case-related expenses. Missing clients/cases are auto-created as archived; rows are marked already-invoiced.",
+    description: "Case-related expenses. Missing clients/cases are auto-created as archived. Rows with an Invoice number are linked to (or create) an invoice with that number; rows without an Invoice number stay unbilled.",
     table: "expenses",
     conflict: "external_id",
     required: ["case_id", "description", "amount"],