diff --git a/backend/src/routes/admin.ts b/backend/src/routes/admin.ts
index bdbbfad..f10f08a 100644
--- a/backend/src/routes/admin.ts
+++ b/backend/src/routes/admin.ts
@@ -34,6 +34,27 @@ export default async function adminRoutes(server: FastifyInstance) {
         limits: { fileSize: 1024 * 1024 * 1024 }
     });
 
+    // Migration 0064 added import-only columns to this table. Keep export
+    // endpoints usable while an older main instance still has the 0055 schema.
+    const tenantExportJobColumns = {
+        id: tenantExportJobs.id,
+        createdAt: tenantExportJobs.createdAt,
+        updatedAt: tenantExportJobs.updatedAt,
+        completedAt: tenantExportJobs.completedAt,
+        tenantId: tenantExportJobs.tenantId,
+        createdBy: tenantExportJobs.createdBy,
+        operation: tenantExportJobs.operation,
+        previousTenantLocked: tenantExportJobs.previousTenantLocked,
+        status: tenantExportJobs.status,
+        filename: tenantExportJobs.filename,
+        storagePath: tenantExportJobs.storagePath,
+        contentType: tenantExportJobs.contentType,
+        fileSize: tenantExportJobs.fileSize,
+        error: tenantExportJobs.error,
+        filesTotal: tenantExportJobs.filesTotal,
+        filesDone: tenantExportJobs.filesDone,
+    };
+
     const deriveNameFromEmail = (email: string) => {
         const localPart = email.split("@")[0] || "Benutzer";
         const normalized = localPart.replace(/[._-]+/g, " ").trim();
@@ -523,7 +544,7 @@ export default async function adminRoutes(server: FastifyInstance) {
                 filename,
                 updatedAt: new Date(),
             })
-            .returning();
+            .returning(tenantExportJobColumns);
 
         void startTenantExportJob(job.id, tenantId, filename);
 
@@ -1335,7 +1356,7 @@ export default async function adminRoutes(server: FastifyInstance) {
 
             const { export_id } = req.params as { export_id: string };
             const [job] = await server.db
-                .select()
+                .select(tenantExportJobColumns)
                 .from(tenantExportJobs)
                 .where(eq(tenantExportJobs.id, export_id))
                 .limit(1);
@@ -1352,6 +1373,7 @@ export default async function adminRoutes(server: FastifyInstance) {
                 filesDone: job.filesDone,
                 filesTotal: job.filesTotal,
                 error: job.error,
+                statusMessage: null,
                 createdAt: job.createdAt,
                 updatedAt: job.updatedAt,
                 completedAt: job.completedAt,
@@ -1373,7 +1395,7 @@ export default async function adminRoutes(server: FastifyInstance) {
 
             const { export_id } = req.params as { export_id: string };
             const [job] = await server.db
-                .select()
+                .select(tenantExportJobColumns)
                 .from(tenantExportJobs)
                 .where(eq(tenantExportJobs.id, export_id))
                 .limit(1);