diff --git a/src/routes/settings.import.tsx b/src/routes/settings.import.tsx
index 3bf7d90..f1e3e47 100644
--- a/src/routes/settings.import.tsx
+++ b/src/routes/settings.import.tsx
@@ -1255,7 +1255,7 @@ function ImportPage() {
         let caseId: string | null = (row.case_id as string | null) ?? null;
         const caseExt = row._caseext ? String(row._caseext).trim() : null;
         const caseNum = row._casenum ? String(row._casenum).trim() : null;
-        if (!caseId && (caseExt || caseNum)) {
+        if (!caseId && clientId && (caseExt || caseNum)) {
           const titleGuess = caseNum || caseExt || "Imported case";
           const numberGuess = caseNum || caseExt || `IMPORTED-${Date.now()}-${Math.floor(Math.random() * 10000)}`;
           caseId = await ensureArchivedCase(clientId, titleGuess, numberGuess, caseExt);